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Brand owned by Unilever (United Kingdom) · about the brand
Peptide Bond Strength Bio-Protein Care Shampoo
Decode Label Safety Score
How we got 5.0 ShowHide
Reviewed 1 time · Methodology v3.1 (updated 8 Oct 2026) — what changed
This shampoo contains Sodium Laureth Sulfate, a primary surfactant known for its potential to irritate sensitive skin and which may carry a trace impurity of 1,4-dioxane (IARC Group 2B). The presence of 'Parfum' indicates an undisclosed fragrance blend, a common source of allergens, alongside individually declared fragrance allergens like Alpha-Isomethyl Ionone, Citronellol, and Linalool. While these are common in rinse-off products, individuals with sensitive skin or fragrance allergies should exercise caution. The formulation also includes Cocamidopropyl Betaine, a mild surfactant that can be a contact allergen for some due to manufacturing impurities. The product contains several synthetic colourants (CI 17200, CI 19140, CI 42090) and Sodium Benzoate, a preservative that can form benzene in the presence of vitamin C, though this is less of a concern in a rinse-off topical product. Overall, it's a standard shampoo formulation with common cosmetic ingredients, but those with sensitivities should be aware of the potential irritants and allergens.
At a glance
From the declared label — not a lab testFindings to weigh
What’s favorable
- Glycerin
- Gluconolactone
- Guar Hydroxypropyltrimonium Chloride
- Trehalose
Shampoo with common irritants and undisclosed fragrance blend
This shampoo contains Sodium Laureth Sulfate, a common cleansing agent that can irritate sensitive skin and may contain a trace impurity of 1,4-dioxane, classified as possibly carcinogenic to humans by IARC. It also includes an undisclosed 'Parfum' blend, a common source of allergens, along with several individually declared fragrance allergens. People with sensitive skin or fragrance allergies should be cautious due to these ingredients and Cocamidopropyl Betaine, which can also be a contact allergen.
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Just checking whether the product is safe? The analysis above is yours, no account needed. To know if it is safe for you, your father or your child, add a profile and we check this label against them.
- Ingredients you avoid. Sulphates, parabens, silicones, fragrance, drying alcohol, PEGs and more.
- Sensitivities. Sensitive skin, hormonal considerations, pregnancy.
- Skin and hair goals. Acne, dryness, ageing, hair fall, dandruff: what the label declares for each.
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Concern breakdown
Score out of 10 · higher = fewer concernsHow this product performs on each concern we check for haircare. This is a breakdown of the same evidence behind the score above — not a separate verdict.
Triggered by CI 17200, CI 19140, CI 42090 — a synthetic colour on our aromatic-amine watch list (impurity risk). A colour-quality caution, not a finding that this product contains a carcinogen.
Why the score is capped
Primary surfactant with recognised irritation potential (EU SCCS)
Rule PC-CAP-05
What's good
Contains Glycerin, a humectant for hydration
Includes Guar Hydroxypropyltrimonium Chloride for hair conditioning
Contains Trehalose for moisture retention
Watch out for
Sodium Laureth Sulfate can be irritating to sensitive skin and scalp
Undisclosed 'Parfum' blend is a common source of allergens
Declared fragrance allergens (Alpha-Isomethyl Ionone, Citronellol, Linalool) may cause sensitisation
Cocamidopropyl Betaine can be a contact allergen for some
Contains synthetic colourants (CI 17200, CI 19140, CI 42090)
Dimethiconol (silicone) may lead to product build-up on hair over time
Phenoxyethanol — common preservative - capped at 1%; French regulator advises caution for under-3s.
Disodium EDTA — disodium EDTA is a chelating agent that keeps a product stable and clear. It has been flagged in some studies for potential endocrine-disrupting properties; regulatory consensus is not yet established, so it is noted as a low-level concern rather than a confirmed hazard.
Ingredient Concerns safety database
Sources cited below may be Indian (FSSAI) or international (EU, US, WHO, IARC) — an international classification or law is evidence, not an Indian regulatory finding.
Sodium Benzoate (E211)
Benzoates are permitted preservatives with an established acceptable daily intake. Two documented concerns: in acidic drinks that also contain ascorbic acid (vitamin C) they can slowly form small amounts of benzene, especially with heat and light (US FDA beverage survey, 2006); and sodium benzoate was one of the additives in the Southampton study mixtures associated with hyperactivity in children. It can also trigger reactions in some people with asthma or urticaria.
Regulatory & scientific authority Source: EFSA re-evaluation of benzoic acid and benzoates (2016); US FDA benzene-in-beverages survey (2006); McCann et al., Lancet 2007
Sodium Benzoate: regulation, sources and other products →Sodium Laureth Sulfate
SLES is a cleansing agent that is milder than SLS but can still irritate very sensitive or compromised skin. Separately, because it is made by ethoxylation, it may carry a residue of 1,4-dioxane, which IARC classifies as possibly carcinogenic to humans (Group 2B). The ingredient list cannot show whether any is present or how much. The EU SCCS considers 1,4-dioxane at or below 10 ppm in a finished cosmetic to be safe, and manufacturers reduce it by vacuum stripping.
Regulatory & scientific authority Source: FDA; EU SCCS
Sodium Laureth Sulfate: regulation, sources and other products →Fragrance Allergens (EU-listed)
These are individual fragrance components that are known contact allergens. EU rules require them to be named on the label when present above 0.001% (leave-on) or 0.01% (rinse-off), because "parfum" alone would hide them. Limonene and linalool are especially common and become more allergenic as they oxidise on exposure to air. This is a risk for people who are sensitised, not a general-population hazard.
Regulatory & scientific authority Source: EU Regulation 2023/1545 (extended fragrance-allergen labelling); SCCS opinions on fragrance allergens
Fragrance Allergens (EU-listed): regulation, sources and other products →Phenoxyethanol
Phenoxyethanol is the most widely used paraben-free preservative. The EU limits it to 1% in cosmetics (SCCS has confirmed this is safe for adults), and the French regulator ANSM advised in 2012 against leave-on products containing it for the nappy area of children under three and recommended a lower concentration for them. It can irritate sensitive skin.
Regulatory & scientific authority Source: EU Regulation 1223/2009 Annex V (max 1.0%); SCCS opinion SCCS/1575/16; ANSM recommendation (2012)
Phenoxyethanol: regulation, sources and other products →Fragrance
"Fragrance" or "parfum" is a catch-all term that can conceal a blend of hundreds of undisclosed chemicals, including known allergens, sensitisers, and potential endocrine disruptors. The EU now mandates disclosure of 82 specific fragrance allergens. People with fragrance sensitivity, asthma, or contact dermatitis should prefer fragrance-free products.
Regulatory & scientific authority Source: EU Regulation 2023/1545; IFRA
Fragrance: regulation, sources and other products →Cocamidopropyl Betaine
Cocamidopropyl betaine is the usual "gentle" co-surfactant in shampoos, face washes and baby washes. It was named Allergen of the Year by the American Contact Dermatitis Society in 2004; the reactions are attributed mainly to impurities (amidoamine, DMAPA) and are uncommon, but it is a common cause of surfactant allergy in people with eczema.
Peer-reviewed research Source: American Contact Dermatitis Society - Allergen of the Year 2004; contact-dermatitis literature
Cocamidopropyl Betaine: regulation, sources and other products →Synthetic Cosmetic Colourants (CI)
These Colour Index (CI) numbers are colourants on the EU list of permitted cosmetic colours, each with conditions on where it may be used (for example, some are allowed only in products that do not stay in contact with mucous membranes). A listed colour in a product used as directed is not a finding of harm; the colour serves only to colour the product, and this is information for anyone who prefers to avoid synthetic dyes.
Regulatory & scientific authority Source: EU Regulation 1223/2009 Annex IV (permitted colourants); SCCS opinions on colourants
Synthetic Cosmetic Colourants (CI): regulation, sources and other products →Decode Label Analysis
Contains Sodium Laureth Sulfate, a primary surfactant known for its potential to irritate sensitive skin and which may carry a 1,4-dioxane impurity (IARC Group 2B, possibly carcinogenic to humans). The EU SCCS considers 1,4-dioxane at or below 10 ppm in a finished cosmetic safe.
Contains 'Parfum', an undisclosed fragrance blend, which is a common source of allergens and can cause sensitisation in susceptible individuals. Transparency is reduced due to the lack of specific fragrance ingredient disclosure.
Contains declared fragrance allergens (ALPHA-ISOMETHYL IONONE, Citronellol, Linalool) which can cause sensitisation in individuals with fragrance allergies or sensitive skin.
Contains Cocamidopropyl Betaine, a mild surfactant that is a recognised contact allergen, primarily due to manufacturing impurities.
Combined Effects interactions
Sodium Benzoate can form benzene, a known carcinogen, in the presence of ascorbic acid (Vitamin C) and heat. While Citric Acid is not Vitamin C, it can lower pH, which might influence the stability of benzoate. This interaction is primarily a concern for ingested products, and less so for rinse-off topical applications where exposure is minimal and brief.
Claim check
Front-of-pack marketing claims checked against this product's actual ingredients and nutrition. "Can't verify" means the label does not provide enough information to check the claim — it is not the same as the claim being false.
The claim 'new' is a temporal marketing statement that cannot be verified from the provided ingredient list or nutrition information.
Hydrolyzed yeast protein and Lysine HCl are listed in the ingredients, which are components that can contribute to peptide bond strength.
Hydrolyzed yeast protein and Lysine HCl are listed in the ingredients, supporting the 'Bio-Protein Care' claim.
Hydrolyzed yeast protein and Lysine HCl are listed in the ingredients, which are protein peptides.
Read straight from the back-of-pack photo — quantities, sections and any disguised terms, so the small print can’t hide behind the marketing.
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1.
WaterWATER
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2.
Sodium Laureth SulfateSODIUM LAURETH SULFATE
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3.
Cocamidopropyl BetaineCOCAMIDOPROPYL BETAINE
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4.
GlycerinGLYCERIN
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5.
DimethiconolDIMETHICONOL
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6.
Parfum undisclosed fragrancePARFUM
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7.
Sodium ChlorideSODIUM CHLORIDE
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8.
Sodium BenzoateSODIUM BENZOATE
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9.
Glycol DistearateGLYCOL DISTEARATE
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10.
CarbomerCARBOMER
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11.
GluconolactoneGLUCONOLACTONE
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12.
PPG-9
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13.
Guar Hydroxypropyltrimonium ChlorideGUAR HYDROXYPROPYLTRIMONIUM CHLORIDE
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14.
TrehaloseTREHALOSE
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15.
TEA-DodecylbenzenesulfonateTEA-DODECYLBENZENESULFONATE
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16.
Citric AcidCITRIC ACID
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17.
Sodium SulfateSODIUM SULFATE
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18.
Disodium EDTADISODIUM EDTA
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19.
PhenoxyethanolPHENOXYETHANOL
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20.
Hydrolyzed Yeast ProteinHYDROLYZED YEAST PROTEIN
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21.
Lysine HClLYSINE HCL
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22.
Sodium HydroxideSODIUM HYDROXIDE
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23.
Alpha-Isomethyl IononeALPHA-ISOMETHYL IONONE
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24.
CitronellolCITRONELLOL
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25.
LinaloolLINALOOL
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26.
CI 17200 synthetic colour
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27.
CI 19140 synthetic colour
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28.
CI 42090 synthetic colour
In label order — normally largest quantity first. Select a row for the full write-up and sources.
Fragrance allergens are substances EU cosmetics rules require to be named on the label (such as Limonene and Linalool). Fragrant botanicals such as essential oils are grouped with them because they can naturally contain such substances, but they are not on that list. They matter mainly for people with fragrance allergies or already-sensitive skin — not a general-population safety issue. Each named allergen takes a small deduction from the ingredient score, and a high count can cap it; fragrant botanicals take none. Naming them on the label is a transparency positive.
✓ Decode Label Assessment: Favorable ⚠ Decode Label Assessment: Concern Decode Label Assessment: Neutral
Who should take caution
About this ingredient
Declared on this label as
No detailed safety data in our database yet for this ingredient.
Learn More
Compare with other shampoo products
Assessed using the same Decode Label methodology, sorted by score. Each score reflects the information available for that product at the time of assessment.
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What are the ingredients in Peptide Bond Strength Bio-Protein Care Shampoo?
The label of Peptide Bond Strength Bio-Protein Care Shampoo lists 28 ingredients, in label order: Water, Sodium Laureth Sulfate, Cocamidopropyl Betaine, Glycerin, Dimethiconol, Parfum, Sodium Chloride, Sodium Benzoate, Glycol Distearate, Carbomer, Gluconolactone, PPG-9, Guar Hydroxypropyltrimonium Chloride, Trehalose, TEA-Dodecylbenzenesulfonate, Citric Acid, Sodium Sulfate, Disodium EDTA, Phenoxyethanol, Hydrolyzed Yeast Protein, Lysine HCl, Sodium Hydroxide, ALPHA-ISOMETHYL IONONE, Citronellol, Linalool, CI 17200, CI 19140, CI 42090. Flagged by the analysis: Sodium Laureth Sulfate, Parfum, Cocamidopropyl Betaine, Phenoxyethanol, CI 17200 and 3 more.
Is Peptide Bond Strength Bio-Protein Care Shampoo safe to use?
Peptide Bond Strength Bio-Protein Care Shampoo scores 5.0/10 on Decode Label (Moderate). This shampoo contains Sodium Laureth Sulfate, a common cleansing agent that can irritate sensitive skin and may contain a trace impurity of 1,4-dioxane, classified as possibly carcinogenic to humans by IARC. It also includes an undisclosed 'Parfum' blend, a common source of allergens, along with several individually declared fragrance allergens. People with sensitive skin or fragrance allergies should be cautious due to these ingredients and Cocamidopropyl Betaine, which can also be a contact allergen.
Why does Peptide Bond Strength Bio-Protein Care Shampoo score 5.0/10?
Flagged in the score: Sodium Laureth Sulfate can be irritating to sensitive skin and scalp. Undisclosed 'Parfum' blend is a common source of allergens. Also noted: Declared fragrance allergens (Alpha-Isomethyl Ionone, Citronellol, Linalool) may cause sensitisation.
Who should avoid Peptide Bond Strength Bio-Protein Care Shampoo?
The points the analysis notes are most relevant to: Sensitive skin; Fragrance allergy; Contact dermatitis; Avoiding ethoxylated ingredients; Allergy to isothiazolinone preservatives.
Does Peptide Bond Strength Bio-Protein Care Shampoo contain allergens?
Yes — the label lists 3 fragrance allergens: ALPHA-ISOMETHYL IONONE, Citronellol and Linalool. These matter mainly if you have sensitive skin or a known fragrance allergy.
Does Peptide Bond Strength Bio-Protein Care Shampoo contain fragrance?
Yes — the ingredient list includes Parfum. Fragrance is declared as a single ingredient, so the individual scent chemicals in it are not named; the label does separately list 3 fragrance allergens (ALPHA-ISOMETHYL IONONE, Citronellol and Linalool). This matters mainly if you have sensitive skin or a known fragrance allergy.
Are the claims on the Peptide Bond Strength Bio-Protein Care Shampoo pack accurate?
Decode Label checked 4 claims against the ingredient list and nutrition panel. "new" — can't be verified from the label.
Answers are generated from this product's own Decode Label analysis — the score, the ingredient list and the label claims shown above. Always check the pack itself for allergen and dietary information.
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About this analysis: Based on declared label information and available evidence. Decode Label does not independently laboratory-test products, and a score is not a regulatory determination or medical advice.
Disclaimer: Safety scores are Decode Label-generated assessments based on publicly available regulatory data (FSSAI, WHO, EFSA, IARC) and peer-reviewed research. They are not a substitute for professional medical advice, and they are not a regulatory determination, a laboratory safety certification or a medical diagnosis. Ingredient safety can vary by individual health conditions, concentration, and usage context. Decode Label is an independent information service and scores every brand by the same rules. No brand pays for or influences its score. Our founder also founded the personal-care brand Botani Bestie (see our story); its products are scored exactly like everyone else's. Data limitations: This assessment is based on the information declared on the product label and the evidence sources above — Decode Label does not independently laboratory-test this product. Ingredient concentrations, sourcing and manufacturing can vary between batches and are not always disclosed. A finding that is not shown here means it was not identified from the available label information, not that it has been ruled out.
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