Which Ingredients in Regular Anti-Dandruff and Volumising Shampoos Can Actually Cause Hair Loss?
Direct answer: the ingredients we prefer to avoid completely for thinning hair are harsh cleansing sulfates such as SLS and SLES, non-water-soluble silicones, parabens, synthetic fragrance blends, phthalates and irritating preservatives such as methylisothiazolinone.
These substances do not directly cause permanent hair loss from the follicle in every user. However, they can create exactly the conditions thinning hair does not need: a disrupted skin barrier, dryness, itching, redness, product buildup and hair fibres that break more easily.
Many conventional shampoos are also not developed by asking what a vulnerable scalp actually needs. They are designed to foam richly, smell intense, remain stable for a long time and make the hair feel smooth or voluminous after a single wash.
That temporary cosmetic result says very little about what repeated use of the formula may do to your scalp and hair.
| Ingredient | Why it is used in regular shampoo | Why we avoid it |
|---|---|---|
| Sodium Lauryl Sulfate, SLS | Provides powerful cleansing and a large amount of foam | Can aggressively remove the scalp’s natural oils, disrupt the skin barrier and worsen dryness, itching and irritation |
| Sodium Laureth Sulfate, SLES | Cleanses and foams, usually somewhat more gently than SLS | Remains a strong degreasing sulfate cleanser that may be too harsh for a dry, sensitive or vulnerable scalp when used regularly |
| Non-water-soluble silicones | Make the hair feel instantly smooth, shiny and soft | Can build up layer by layer on the hair fibre, weigh down fine hair and make stronger cleansing necessary to remove the residue |
| Parabens | Extend shelf life as synthetic preservatives | Add nothing to the health of the hair or scalp and are used solely to keep the product stable for longer. Certain parabens are being investigated for possible endocrine effects. We consider them an unnecessary synthetic burden in a product used regularly on the scalp |
| Synthetic fragrance | Gives shampoo a strong and long-lasting scent | May consist of a complex blend of synthetic fragrance ingredients, solvents and fixatives. The individual components are not always fully visible to consumers, and some fragrance ingredients can cause irritation or contact allergy |
| Phthalates | May be used in cosmetics and fragrance blends as solvents or fragrance fixatives | This chemical group includes substances linked to endocrine disruption, reproductive toxicity and, in the case of certain phthalates, cancer. We therefore exclude the entire category from our fragrance and formulas |
| MI and MCI | Preserve water-based cosmetics | Are known contact allergens that can cause redness, itching, flaking and scalp dermatitis |
| Formaldehyde-releasing preservatives | Inhibit bacteria and fungi | Can trigger irritation or allergic contact dermatitis in sensitive users and add nothing beneficial to the hair or scalp |
The problem is often not one isolated ingredient, but the complete formula.
A conventional shampoo may cleanse aggressively with sulfates, compensate for the rougher-feeling hair lengths with silicones, add synthetic fragrance for a strong sensory experience and use synthetic preservatives to keep the product stable for as long as possible.
The hair may feel clean and smooth after washing. That does not automatically make the formula a good choice for a sensitive scalp or thinning hair.
1. SLS: Maximum Foam, Maximum Degreasing
Sodium Lauryl Sulfate, usually abbreviated as SLS, is a powerful cleanser that removes sebum, dirt and styling residue. It creates the rich foam that many people associate with an effective shampoo.
More foam does not mean a shampoo is better for your hair. It mainly means the formula contains strongly foaming surfactants.
SLS can thoroughly remove the scalp’s natural oils. This may increase moisture loss from the skin and weaken the protective skin barrier. DermNet describes SLS as a relatively irritating cleanser and as more irritating than the related SLES.
An over-cleansed scalp may respond with:
- Itching
- Redness
- Flaking
- A tight or burning sensation
- Greater sensitivity to other ingredients
- More scratching and mechanical damage
SLS does not automatically cause hereditary hair loss. However, when your hair is already thinning, a cleanser that strips the scalp during every wash is not a neutral choice.
An irritated scalp, repeated scratching and dried-out hair fibres can further contribute to breakage and temporary increased shedding.
2. SLES: Milder Does Not Automatically Mean Mild
Sodium Laureth Sulfate, abbreviated as SLES, is often presented as the more scalp-friendly version of SLS.
SLES is generally less irritating than SLS, but it remains a strongly foaming sulfate cleanser. It is designed to remove oil, sebum and product residue efficiently.
Whether SLES causes problems depends on factors including:
- The concentration in the shampoo
- The other cleansers in the formula
- How often you wash your hair
- How long the shampoo remains on the scalp
- The condition of your scalp
- The condition and structure of your hair
The question is therefore not only whether SLES is legally permitted. The more relevant question is why you would choose a strongly degreasing sulfate base for thinning hair when a shampoo can also cleanse effectively without sulfates.
Reviews of hair care describe how powerful surfactants can remove lipids and other material from the hair fibre. Combined with friction during washing, this may contribute to drier, rougher and more vulnerable hair. (pmc.ncbi.nlm.nih.gov)
Fine, bleached, coloured, curly or already damaged hair may be especially affected.
3. Silicones: A Quick Cosmetic Fix That Can Mask the Real Problem
Silicones are added to shampoos and conditioners because they deliver an immediate effect. They create a smoothing layer around the hair fibre, making the hair feel softer, look shinier and become easier to comb.
That effect is mainly cosmetic.
The silicone film does not genuinely repair a damaged hair fibre. It makes the surface feel temporarily smoother, which can make underlying dryness or damage less visible.
Common silicones include:
- Dimethicone
- Amodimethicone
- Dimethiconol
- Trimethylsilylamodimethicone
Certain non-water-soluble silicones and conditioning polymers can accumulate on the hair fibre with repeated use. On fine and thinning hair, this can make the hair feel heavy, limp and flatter, making the scalp more visible.
A cycle can also develop:
- Silicones create a smoothing layer around the hair.
- Repeated use causes product buildup.
- A stronger shampoo is needed to remove the residue.
- The stronger cleansing dries out the hair and scalp even further.
- More silicones are then needed to make the hair feel smooth again.
A dermatological review of shampoos and conditioners describes how certain polymers may accumulate on the hair fibre after prolonged use and how a strong cleanser may be needed to remove this residue. (pmc.ncbi.nlm.nih.gov)
Silicones can therefore make hair look healthier without actually improving the underlying condition of the hair or scalp.
Do Silicones Suffocate the Hair Follicles?
Not literally. Hair follicles do not obtain oxygen from the outside air. They receive oxygen and nutrients through the blood supply.
When people say their scalp can no longer “breathe”, they usually mean that a layer of sebum, silicones, polymers and styling residue remains on the hair and possibly the scalp.
The objection to silicones is therefore not that they literally seal off the hair follicles. The concern is that certain silicones:
- Can accumulate on the hair fibre
- Can weigh down fine hair
- Can make the hair look temporarily healthier than it really is
- May require stronger cleansing
- Add nothing to scalp care
- Do not fit within a natural, low-residue routine
At ZENLUCA, we therefore consciously choose silicone-free formulas. We do not want to coat the hair with a synthetic film only to need a stronger shampoo to remove that film later.
4. Parabens: Synthetic Shelf Life Without Any Benefit to the Scalp
Parabens are synthetic preservatives. They are added to cosmetics to extend shelf life and prevent the growth of bacteria and fungi in the product.
Examples include:
- Methylparaben
- Propylparaben
- Butylparaben
- Ethylparaben
- Isopropylparaben
- Isobutylparaben
Parabens are not added because they cleanse the hair, calm the scalp or support thinning hair. Their function is to preserve the formula.
Certain parabens have been studied extensively because of their possible influence on the endocrine system. The European Scientific Committee on Consumer Safety concludes that methylparaben and butylparaben can be used safely within specific, limited concentrations, but these assessments explicitly consider concerns about possible endocrine activity. Additional concentration restrictions have also been discussed for children’s combined exposure to butylparaben. (health.ec.europa.eu)
The fact that some parabens are permitted within legal limits does not mean we consider them necessary or desirable in a shampoo that is massaged directly into the scalp several times a week.
Parabens:
- Do not cleanse the hair
- Do not calm the scalp
- Do not hydrate the skin
- Do not strengthen the hair fibre
- Do not support the hair follicle
- Are present solely to keep the product stable for longer
At ZENLUCA, we see no reason to use this class of synthetic preservatives when a stable and effective 100% natural formula can be developed without parabens.
For us, paraben-free is therefore not a superficial marketing term. It is part of a clear choice: no unnecessary synthetic additives in a product developed for people who want to care for their scalp more consciously.
5. Synthetic Fragrance: A Strong Scent Says Nothing About Shampoo Quality
Many conventional shampoos are heavily fragranced. A strong scent makes consumers feel that their hair is especially clean, fresh or luxuriously cared for.
However, fragrance has no cleansing or conditioning function.
The term “parfum” or “fragrance” may also represent a complex blend of many natural and synthetic substances. In the United States, the FDA allows these substances to be listed collectively as “Fragrance” because a fragrance formula may be treated as a trade secret. This can make it difficult for consumers to see exactly which fragrance ingredients, solvents and fixatives have been used. (fda.gov)
Fragrance ingredients may also cause allergic reactions or irritation in sensitive people. Possible symptoms include:
- Itching after washing
- A burning sensation
- Red patches along the hairline
- Irritation behind the ears
- Flaking that becomes worse
- A painful or sensitive scalp
The FDA confirms that certain ingredients used in fragrance formulas can trigger allergic reactions or sensitivity in some people. (fda.gov)
What Do Phthalates Have to Do with Synthetic Fragrance?
Phthalates are a group of synthetic chemicals that have been used in various consumer products and cosmetics. They may serve as solvents, plasticisers or ingredients that help a fragrance last longer.
According to the FDA, diethyl phthalate, DEP, is the phthalate most commonly used in fragrance products. The FDA states that no known health risks have been established for DEP at its current use levels in cosmetics and fragrances. However, this does not mean that all phthalates have the same properties or risk profile. (fda.gov)
The phthalate group also contains considerably more concerning substances.
Di(2-ethylhexyl) phthalate, DEHP, is listed by the US National Toxicology Program as a substance that is reasonably anticipated to be a human carcinogen. This classification is based on sufficient evidence of carcinogenicity in experimental animals. (ntp.niehs.nih.gov)
DEHP, DBP, BBP and DIBP have also been identified by the European Chemicals Agency because of reproductive toxicity and, for several of these substances, endocrine-disrupting properties. (echa.europa.eu)
It would be inaccurate to claim that every synthetic fragrance contains carcinogenic phthalates. It is, however, reasonable to be critical of a broad ingredient category that includes substances with very different and sometimes serious risk profiles.
Our choice is therefore clear: we do not use phthalates at all, including as fragrance fixatives or supporting ingredients.
Why Our Fragrance Is Different
We did not want to develop a natural shampoo and then add an opaque synthetic fragrance blend.
The fragrance in ZENLUCA Shampoo is therefore 100% naturally created from green tea, grapefruit and lemongrass.
Our fragrance contains:
- No synthetic fragrance ingredients
- No phthalates
- Green tea
- Grapefruit
- Lemongrass
According to the compliance documentation from our fragrance supplier, the fragrance complies with the applicable IFRA Standards for its intended use. IFRA Standards set limits for certain fragrance ingredients based on safety assessments and may restrict, specify or prohibit ingredients. IFRA does not itself certify individual finished products, which is why “IFRA-compliant” is the correct wording rather than “IFRA-certified”. (ifrafragrance.org)
The fragrance was therefore not only selected because it smells fresh. It reflects our complete product philosophy: 100% natural, transparent and free from synthetic fragrance ingredients and phthalates.
Natural fragrance ingredients may still trigger a reaction in very sensitive skin. For that reason, it remains sensible to test a new cosmetic product on a small area first if you have known sensitivities.
6. Methylisothiazolinone and Other Irritating Preservatives
Methylisothiazolinone, often abbreviated as MI, and methylchloroisothiazolinone, abbreviated as MCI, are synthetic preservatives known to be contact allergens.
You may see them listed as:
- Methylisothiazolinone
- Methylchloroisothiazolinone
- MI
- MCI
- MCI/MI
In sensitive users, these substances may cause:
- Itching
- Redness
- Flaking
- Swelling
- Eczema
- Scalp dermatitis
DermNet confirms that MI can cause contact dermatitis even in rinse-off products such as shampoo. (dermnetnz.org)
Formaldehyde-releasing preservatives also deserve extra attention, including:
- DMDM Hydantoin
- Quaternium-15
- Diazolidinyl Urea
- Imidazolidinyl Urea
These ingredients help keep a product stable for longer. They add nothing to the condition of the hair or scalp, and formaldehyde-related preservatives may trigger contact allergy in sensitive users. (dermnetnz.org)
For a shampoo that is massaged directly into the scalp on a regular basis, we prefer a formula without these unnecessarily aggressive preservatives.
Why Anti-Dandruff Shampoo Can Sometimes Make Your Hair Feel Worse
Anti-dandruff shampoo can be useful when you genuinely have dandruff, seborrhoeic dermatitis or another scalp condition.
The problem is often not only the active anti-dandruff ingredient, but the complete formula around it.
Many anti-dandruff shampoos combine active ingredients with a strongly cleansing base. When such a shampoo is used more often than necessary, left on for too long or applied throughout the hair lengths, it may lead to:
- Dry hair lengths
- A rough and stiff hair texture
- More tangling
- A tight-feeling scalp
- More breakage during brushing
- Increasing sensitivity or irritation
A shampoo that targets dandruff is therefore not automatically suitable as a daily shampoo for someone with vulnerable or thinning hair.
Use a medicated anti-dandruff shampoo specifically and according to the instructions. If you continue to experience thick flakes, inflammation, scabs or severe itching, consult a doctor or dermatologist.
Why Volumising Shampoo Is Often Mainly a Cosmetic Trick
Volumising shampoo is designed to make the hair feel light, airy and less oily. To create that immediate effect, oils and conditioning residue are often removed very thoroughly.
The result is immediately visible: the hair temporarily stands slightly further away from the scalp and feels lighter.
However, that temporary volume may come with:
- More dryness
- More static electricity
- Stiffer hair lengths
- Increased friction
- More tangling
- Faster breakage
Other volumising products use polymers or coatings that temporarily make the hair fibre look thicker. This also does nothing to change the actual hair density or the condition of the follicles.
A volumising shampoo can therefore make the hair appear fuller while repeated use may further dry out already vulnerable lengths.
The Real Question: What Does Thinning Hair Need?
Thinning hair does not need maximum foam, a heavy synthetic fragrance cloud or a thick silicone layer.
It needs:
- Gentle but effective cleansing
- A scalp barrier that is not stripped unnecessarily
- As little irritation as possible
- Care without heavy product buildup
- Hair lengths that remain flexible
- Less friction and breakage
- A consistent scalp care routine
- Transparency about what the formula contains
This is a fundamentally different approach from the formulation of many conventional anti-dandruff and volumising shampoos.
Why We Developed ZENLUCA Differently
At ZENLUCA, we did not begin by asking how we could make our shampoo foam as much as possible, smell as strong as possible or coat the hair temporarily.
We began with a different question:
What does a scalp with thinning hair genuinely need during every wash?
That is why our ZENLUCA Hair Growth Stimulating Shampoo is 100% natural and free from:
- Sulfates
- Silicones
- Parabens
- Phthalates
- Synthetic fragrance ingredients
Our shampoo contains, among other ingredients:
- 7% Ecklonia Cava
- 3.5% niacinamide
- 3% caffeine
- Aloe vera
- Jojoba oil
- Argan oil
- Rosemary extract
- Nettle extract
- Ginseng
- Burdock root extract
- Saw palmetto
- Lactobacillus ferment
ZENLUCA’s product information confirms the concentrations of the three key ingredients and states that the shampoo is free from sulfates, silicones, parabens and phthalates. The full ingredient list also states that the fragrance is natural and phthalate-free. (zenluca.com)
7% Ecklonia Cava
Ecklonia Cava is a brown seaweed rich in natural polyphenols. It is central to our formula and our wider routine for men and women concerned about thinning hair.
3.5% Niacinamide
Niacinamide, also known as vitamin B3, is used to care for the scalp. It fits within our choice to create a shampoo that does more than cleanse and also considers scalp comfort and condition.
3% Caffeine
Caffeine is a widely used cosmetic ingredient in products for thinning hair. In our shampoo, it is combined with Ecklonia Cava and niacinamide rather than being added as a minor marketing ingredient to a standard sulfate base.
Aloe Vera, Jojoba Oil and Argan Oil
These conditioning ingredients help prevent clean hair from automatically meaning dry and rough hair.
The goal is a clean scalp and fresh hair without the harsh, tight or dried-out feeling that strongly cleansing shampoos may leave behind.
A 100% Natural Fragrance
Our fragrance is created from green tea, grapefruit and lemongrass. No synthetic fragrance ingredients or phthalates are used.
That distinction matters. We do not choose natural active ingredients only to add a conventional synthetic fragrance blend afterwards. The natural philosophy runs through the entire formula, including the scent.
Can Your Scalp “Breathe” Better with ZENLUCA?
Hair follicles do not literally breathe through the outside air.
What we mean by a scalp that can breathe freely is a scalp that is not unnecessarily burdened with:
- A heavy silicone film
- Excessive product buildup
- Strong sulfate cleansing
- Parabens
- Phthalates
- A synthetic fragrance blend
The goal is a clean, comfortable and well-cared-for environment where sebum and product residue are removed without aggressively stripping the skin barrier during every wash.
With the ZENLUCA Shampoo for thinning hair, you are not choosing temporary foam or silicone shine. You are choosing a natural formula that combines cleansing with targeted scalp care.
For us, that is the superior choice for people who do not only want their hair to look clean, but want to build a more conscious overall hair care routine.
How Do You Recognise a Shampoo That Does Not Suit You?
You do not need to be an ingredient expert to notice that a shampoo is too harsh.
Watch for these signs:
- Your scalp feels tight after washing
- You experience itching after every wash
- You notice redness along the hairline
- Your hair feels dry or rough
- You need more and more conditioner to detangle it
- Your hair tangles more easily
- You notice an increasing number of short, broken hairs
- You develop sensitive areas or bumps
- Your hair becomes flatter because of product buildup
- You regularly need a strong clarifying shampoo to remove residue
A shampoo should remove dirt and excess sebum. Your scalp should not need to recover from the cleansing process after every wash.
How to Check the Ingredient List Yourself
Do not only look at the front of the bottle. Terms such as “volume”, “professional”, “repair”, “anti-hair loss” and “dermatologically tested” say very little about the complete formula.
Check the ingredient list for the following names.
Sulfates
- Sodium Lauryl Sulfate
- Sodium Laureth Sulfate
- Ammonium Lauryl Sulfate
- Ammonium Laureth Sulfate
Silicones
- Dimethicone
- Amodimethicone
- Dimethiconol
- Trimethylsilylamodimethicone
Parabens
- Methylparaben
- Propylparaben
- Butylparaben
- Ethylparaben
- Isopropylparaben
- Isobutylparaben
Potentially Irritating Preservatives
- Methylisothiazolinone
- Methylchloroisothiazolinone
- DMDM Hydantoin
- Quaternium-15
- Diazolidinyl Urea
- Imidazolidinyl Urea
Synthetic Fragrance and Fragrance Allergens
- Parfum
- Fragrance
- Limonene
- Linalool
- Citral
- Geraniol
- Eugenol
Phthalates
Phthalates are not always listed separately on the label when they form part of a fragrance composition. Names you may encounter in ingredient lists or technical documentation include:
- Diethyl Phthalate, DEP
- Dibutyl Phthalate, DBP
- Diethylhexyl Phthalate, DEHP
- Benzyl Butyl Phthalate, BBP
- Diisobutyl Phthalate, DIBP
One ingredient does not automatically mean you will experience problems. However, a long combination of strong cleansers, synthetic coatings, fragrance and controversial preservatives is, in our view, a clear reason to choose a cleaner formula.
What Should You Do If Your Current Shampoo Is Weakening Your Hair?
Step 1: Temporarily Stop Using the Harsh Formula
Give your scalp a few weeks of rest with a gentler shampoo without sulfates, silicones, parabens and synthetic fragrance.
Step 2: Do Not Change Your Entire Routine at Once
Replace your shampoo first. If you replace your shampoo, conditioner, serum and styling products at the same time, you will not know which product made the difference.
Step 3: Apply Shampoo Mainly to the Scalp
Massage the shampoo gently into the scalp. Allow it to run through the hair lengths while rinsing without rubbing the lengths harshly against each other.
Step 4: Use Lukewarm Water
Very hot water can worsen dryness and sensitivity.
Step 5: Assess the Change Over Several Weeks
Pay attention to:
- Less itching
- Less redness
- Less tightness
- Less flaking
- Fewer tangles
- Less hair breakage
- Softer hair lengths
- A more comfortable scalp
Changes in scalp comfort may become noticeable relatively quickly. Changes in breakage and hair condition usually require several weeks.
Conclusion: Which Shampoo Ingredients Should You Avoid?
The biggest red flags in many conventional anti-dandruff and volumising shampoos are:
- Strong cleansing sulfates such as SLS and SLES
- Non-water-soluble silicones that may build up
- Parabens that add nothing to the hair or scalp
- Synthetic fragrance blends
- Phthalates
- Methylisothiazolinone and similar contact allergens
- Formaldehyde-releasing preservatives
These ingredients do not directly cause permanent hair loss in every user. They may, however, contribute to dryness, itching, irritation, product buildup and hair breakage.
For someone with thinning or vulnerable hair, that is not a minor detail. It is a good reason to look more critically at what you apply directly to your scalp several times a week.
Many conventional shampoos try to compensate for aggressive cleansing afterwards with silicones and other coatings. We deliberately choose a different route: gentle and effective cleansing without stripping the hair first and then artificially smoothing it.
That is why the ZENLUCA Hair Growth Stimulating Shampoo is 100% natural, sulfate-free, silicone-free, paraben-free and phthalate-free.
With 7% Ecklonia Cava, 3.5% niacinamide, 3% caffeine, conditioning natural ingredients and a 100% natural fragrance of green tea, grapefruit and lemongrass, the formula is developed for people who no longer want to settle for standard shampoo ingredients added mainly for foam, fragrance, shelf life and a temporary cosmetic effect.
Frequently Asked Questions
Can SLS in Shampoo Cause Hair Loss?
SLS does not automatically cause hereditary hair loss. It can, however, strongly degrease and irritate the scalp. Itching, scratching, dryness and breakage may therefore increase, especially when the scalp is already sensitive and the hair is becoming more vulnerable.
Is SLES Bad for Thinning Hair?
SLES is generally milder than SLS, but it remains a strong sulfate cleanser. For a dry, sensitive or easily irritated scalp, a well-formulated sulfate-free shampoo may be a more logical choice.
Do Silicones Suffocate Hair Follicles?
Not literally. Silicones can form a layer around the hair fibre, weigh down fine hair and cause product buildup. Some silicones require stronger cleansing to be removed completely.
Are Parabens Bad for Your Hair?
Parabens contribute nothing to cleansing, hydration or care of the hair and scalp. They are used solely as synthetic preservatives. Certain parabens have been studied because of possible endocrine effects. ZENLUCA avoids the entire category because parabens do not fit within our 100% natural formulas.
Are Phthalates Used in Synthetic Fragrance?
Phthalates may be used in cosmetics and fragrance products as solvents or fragrance fixatives. According to the FDA, DEP is the phthalate most commonly used in fragrance products. Not every synthetic fragrance contains phthalates, but the term “fragrance” does not always give consumers full insight into every individual ingredient.
Are Phthalates Carcinogenic?
Not all phthalates have the same risk profile. DEHP is listed by the US National Toxicology Program as a substance reasonably anticipated to be a human carcinogen. Other phthalates have been identified because of endocrine-disrupting or reproductive toxic effects. ZENLUCA therefore chooses to exclude the entire category.
Is the ZENLUCA Fragrance Synthetic?
No. The fragrance in ZENLUCA Shampoo is 100% naturally created from green tea, grapefruit and lemongrass. It contains no synthetic fragrance ingredients and no phthalates.
What Does IFRA-Compliant Mean?
IFRA-compliant means that, according to the supplier’s compliance documentation, the fragrance meets the relevant IFRA Standards for its intended use. IFRA sets safety limits for certain fragrance ingredients but does not itself certify individual finished products.
Can Fragrance in Shampoo Worsen Hair Loss?
Fragrance does not usually cause hereditary hair loss directly. Synthetic or natural fragrance ingredients may, however, trigger itching, redness and contact dermatitis in sensitive people. Persistent irritation and scratching can then worsen hair breakage and temporary increased shedding.
Can Anti-Dandruff Shampoo Dry Out Your Hair?
Yes. Especially when used too often or incorrectly, a strongly cleansing anti-dandruff shampoo can dry out the hair lengths and make them feel rough. Use medicated anti-dandruff products specifically and always follow the instructions.
Why Does My Hair Feel Smooth with Silicones?
Silicones form a smoothing film around the hair fibre. This temporarily reduces friction and makes the hair feel softer. That effect does not automatically mean the actual condition of the hair has improved.
Is Natural Shampoo Always Better?
Not every natural shampoo is automatically well formulated, and natural ingredients can also cause irritation in sensitive users. For people who consciously want to avoid sulfates, silicones, parabens, synthetic fragrance and phthalates, a carefully developed natural shampoo is a cleaner alternative.
Which Shampoo Is Suitable for Thinning Hair?
Choose a shampoo that cleanses effectively but gently, does not leave the scalp feeling tight and does not cause heavy product buildup. ZENLUCA Shampoo combines a sulfate-free formula with Ecklonia Cava, niacinamide, caffeine and conditioning natural ingredients.
How Quickly Will You Notice a Difference After Switching to a Natural Shampoo?
Changes in itching, dryness and scalp comfort may become noticeable within a few washes. Reduced hair breakage and improved hair condition usually take several weeks. Changes in hair growth should be assessed over several months.
Sources Consulted
- DermNet: shampoo, cleansers and possible scalp reactions
- DermNet: methylisothiazolinone allergy
- FDA: fragrances in cosmetics
- FDA: phthalates in cosmetics
- National Toxicology Program: carcinogenicity profile of DEHP
- ECHA: information about phthalates
- IFRA: explanation of the IFRA Standards
- Scientific review: Pro and Contra of Cleansing Conditioners
- Scientific review: Shampoo and Conditioners, What a Dermatologist Should Know
- European SCCS: assessment of methylparaben
- European SCCS: assessment of butylparaben
- ZENLUCA Hair Growth Stimulating Shampoo
This information is intended for general educational purposes and does not replace personalised medical advice, diagnosis or treatment.