Smooth & Shine Conditioner by Tresemmé — product pack

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Tresemmé

Smooth & Shine Conditioner

haircare
3.5 Concerning

Decode Label Safety Score

Ingredient safety · 55% 4.6/10
Processing · 15% 7.0/10
Marketing · 30% 7.5/10
How we got 3.5 Show
Weighted score 5.8/10
Capped — Contains an isothiazolinone contact sensitizer — MCI/MI (EU SCCS) ≤ 3.5
Also flagged
High load of declared fragrance allergens (EU-listed)
Final score 3.5/10 · Concerning

Methodology v3.1 (updated 8 Oct 2026) — what changed

The score is capped for a specific safety reason, set out below. This rinse-off conditioner contains a blend of conditioning agents and silicones designed to smooth hair. However, it includes Methylchloroisothiazolinone and Methylisothiazolinone, which are potent contact sensitizers, particularly concerning for individuals with sensitive skin or a history of contact allergies. The presence of 'Fragrance' and multiple declared fragrance allergens also increases the risk of skin irritation or allergic reactions for sensitive individuals. While it is a rinse-off product, reducing exposure time, these sensitizers remain a significant concern.

Contains potent sensitizing preservatives and multiple fragrance allergens

The score is capped for a specific safety reason, set out below. This conditioner contains Methylchloroisothiazolinone and Methylisothiazolinone, preservatives known for causing skin sensitization and contact allergies, especially for those with sensitive skin. It also includes an undisclosed 'Fragrance' blend and several declared fragrance allergens, which can trigger allergic reactions. While it's a rinse-off product, reducing contact time, these ingredients are still a concern for skin sensitivity.

Consider this product carefully if you are

  • Avoiding certain additives or colours — Methylchloroisothiazolinone is declared.
Okay for: Individuals without known skin sensitivities or allergies

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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 What drives the score, concern by concern · score out of 10, higher = fewer concerns
Key risks: Contains an isothiazolinone contact sensitizer — MCI/MI (EU SCCS) Methylchloroisothiazolinone Linalool PEG-7 Propylheptyl Ether Fragrance

Concern breakdown

Score out of 10 · higher = fewer concerns

How 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.

Preservative Safety Significant concern · 2.0/10
Fragrance & Allergen Load Significant concern · 3.0/10
Harsh Surfactants & Irritants No concern identified · 8.0/10
Irritant & Sensitising Actives No concern identified · 8.0/10
Endocrine-Active Ingredients No concern identified · 8.0/10
Carcinogen & Contaminant Risk No concern identified · 8.0/10
Label Transparency No concern identified · 8.0/10

Why the score is capped

Contains an isothiazolinone contact sensitizer — MCI/MI (EU SCCS)

Rule PC-CAP-15

High load of declared fragrance allergens (EU-listed)

Rule PC-CAP-03

What's good

Contains effective conditioning agents like Cetearyl Alcohol, Behentrimonium Chloride for hair smoothing and detangling.

Includes beneficial ingredients such as Hydrolyzed Silk, Panthenol, Lysine Hydrochloride, and Urea for hair conditioning and strength.

Watch out for

The presence of Methylchloroisothiazolinone and Methylisothiazolinone, potent contact sensitizers, poses a significant risk for allergic reactions, especially for those with sensitive skin.

The undisclosed 'Fragrance' and multiple declared fragrance allergens increase the likelihood of skin irritation or allergic reactions for sensitive individuals.

Silicones like Dimethicone and Amodimethicone can lead to product build-up on hair over time, potentially requiring clarifying shampoos.

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.

Methylisothiazolinone

MI and its chlorinated partner MCI are preservatives and recognised contact sensitisers. After MI replaced parabens in many products, European dermatology clinics recorded a sharp rise in contact allergy to it. Contact allergy, once acquired, is usually long-lasting, so people already sensitised to MI are advised to avoid it. EU rules ban MI from leave-on cosmetics (since 2017) and limit it to 15 ppm in rinse-off products. Whether a particular product causes a reaction depends on the person, the concentration and the contact time, which the label alone cannot show.

Regulatory & scientific authority Source: EU Regulation 2017/1224; SCCS Opinion SCCS/1521/13; British Journal of Dermatology (MI epidemic)

Methylisothiazolinone: 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 →

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 →

Polyethylene Glycols (PEGs)

PEG ingredients are made by ethoxylation, which can leave traces of ethylene oxide (IARC Group 1) and 1,4-dioxane (IARC Group 2B) unless removed. Good manufacturing removes them, so the ingredient itself is not a hazard, but the label cannot tell you whether it was done well. PEGs should not be applied to broken skin.

Regulatory & scientific authority Source: IARC Monographs Vol. 100F (ethylene oxide) and Vol. 71 (1,4-dioxane); Cosmetic Ingredient Review

Polyethylene Glycols (PEGs): regulation, sources and other products →

Decode Label Analysis

Methylchloroisothiazolinone and Methylisothiazolinone are potent contact sensitizers, restricted in rinse-off cosmetics by the EU SCCS due to their high potential to cause allergic reactions. They are prohibited in leave-on products.

Fragrance (Parfum) is an undisclosed blend of chemicals and a common source of skin irritation and allergic reactions. The product also contains multiple declared fragrance allergens (Linalool, Benzyl Salicylate, Citronellol, Alpha-Isomethyl Ionone, Hexyl Cinnamal) which are relevant for individuals with fragrance allergies or sensitive skin.

PEG-7 Propylheptyl Ether is an ethoxylated ingredient, which may carry a 1,4-dioxane residue. The EU SCCS considers 1,4-dioxane at or below 10 ppm in a finished cosmetic safe.

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.

?
"USED BY PROFESSIONALS" Can't verify

This claim refers to professional usage, which cannot be verified from the ingredient list or other label information.

?
"NEW^" Can't verify

The claim 'NEW^' indicates a new product or formulation, which cannot be verified from the provided ingredient list or label information.

?
"Intense moisturisation for salon silky smooth hair" Can't verify

The claim of 'Intense moisturisation for salon silky smooth hair' describes a product benefit that cannot be objectively verified from the ingredient list alone.

?
"PRO COLLECTION" Can't verify

The claim 'PRO COLLECTION' refers to a product line or collection, which cannot be verified from the ingredient list or other label information.

✓
"WITH VITAMIN H & SILK PROTEIN" Checks out

The ingredient list includes Biotin (Vitamin H) and Hydrolyzed Silk (Silk Protein), supporting the claim.

BIOTIN HYDROLYZED SILK

Read straight from the back-of-pack photo — quantities, sections and any disguised terms, so the small print can’t hide behind the marketing.

  • 1.
    Water
    WATER
  • 2.
    Cetearyl Alcohol
    CETEARYL ALCOHOL
  • 3.
    Dimethicone
    DIMETHICONE
  • 4.
    Amodimethicone
    AMODIMETHICONE
  • 5.
    PEG-7 Propylheptyl Ether
    PEG-7 PROPYLHEPTYL ETHER
  • 6.
    Cetrimonium Chloride
    CETRIMONIUM CHLORIDE
  • 7.
    Behentrimonium Chloride
    BEHENTRIMONIUM CHLORIDE
  • 8.
    Fragrance undisclosed fragrance
    PERFUME
  • 9.
    Stearamidopropyl Dimethylamine
    STEARAMIDOPROPYL DIMETHYLAMINE
  • 10.
    Sodium Chloride
    SODIUM CHLORIDE
  • 11.
    Lactic Acid
    LACTIC ACID
  • 12.
    Disodium EDTA
    DISODIUM EDTA
  • 13.
    Lysine Hydrochloride
    LYSINE HYDROCHLORIDE
  • 14.
    Urea
    UREA
  • 15.
    Disodium Phosphate
    DISODIUM PHOSPHATE
  • 16.
    Biotin
    BIOTIN
  • 17.
    Citric Acid
    CITRIC ACID
  • 18.
    Hydrolyzed Silk
    HYDROLYZED SILK
  • 19.
    Panthenol
    PANTHENOL
  • 20.
    Argania Spinosa Kernel Oil trace amount
    ARGANIA SPINOSA KERNEL (ARGAN) OIL
  • 21.
    Methylchloroisothiazolinone
    METHYLCHLOROISOTHIAZOLINONE
  • 22.
    Methylisothiazolinone
    METHYLISOTHIAZOLINONE
  • 23.
    Linalool
    LINALOOL
  • 24.
    Benzyl Salicylate
    BENZYL SALICYLATE
  • 25.
    Citronellol
    CITRONELLOL
  • 26.
    Alpha-Isomethyl Ionone
    ALPHA-ISOMETHYL IONONE
  • 27.
    Hexyl Cinnamal
    HEXYL CINNAMAL

Trace amounts: some named ingredients appear in token quantities or low in the list. At these concentrations a meaningful benefit is unlikely, and their front-of-pack prominence may not reflect their level in the formulation.

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.

Compare with other conditioner 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 Smooth & Shine Conditioner?

The label of Smooth & Shine Conditioner lists 27 ingredients, in label order: Water, CETEARYL ALCOHOL, Dimethicone, Amodimethicone, PEG-7 Propylheptyl Ether, Cetrimonium Chloride, Behentrimonium Chloride, Fragrance, Stearamidopropyl Dimethylamine, Sodium Chloride, Lactic Acid, Disodium EDTA, Lysine Hydrochloride, Urea, Disodium Phosphate, Biotin, Citric Acid, Hydrolyzed Silk, Panthenol, Argania Spinosa Kernel Oil, Methylchloroisothiazolinone, Methylisothiazolinone, Linalool, Benzyl Salicylate, Citronellol, ALPHA-ISOMETHYL IONONE, Hexyl Cinnamal. Flagged by the analysis: Methylchloroisothiazolinone, Methylisothiazolinone, Fragrance, PEG-7 Propylheptyl Ether, Disodium EDTA.

Is Smooth & Shine Conditioner safe to use?

Smooth & Shine Conditioner scores 3.5/10 on Decode Label (Concerning). The score is capped for a specific safety reason, set out below. This conditioner contains Methylchloroisothiazolinone and Methylisothiazolinone, preservatives known for causing skin sensitization and contact allergies, especially for those with sensitive skin. It also includes an undisclosed 'Fragrance' blend and several declared fragrance allergens, which can trigger allergic reactions. While it's a rinse-off product, reducing contact time, these ingredients are still a concern for skin sensitivity.

Why does Smooth & Shine Conditioner score 3.5/10?

Flagged in the score: The presence of Methylchloroisothiazolinone and Methylisothiazolinone, potent contact sensitizers, poses a significant risk for allergic reactions, especially for those with sensitive skin. The undisclosed 'Fragrance' and multiple declared fragrance allergens increase the likelihood of skin irritation or allergic reactions for sensitive individuals. Also noted: Silicones like Dimethicone and Amodimethicone can lead to product build-up on hair over time, potentially requiring clarifying shampoos.

Who should avoid Smooth & Shine Conditioner?

The points the analysis notes are most relevant to: Sensitive skin or contact allergies; Avoiding isothiazolinone preservatives; Fragrance allergy or sensitivity.

Does Smooth & Shine Conditioner contain allergens?

Yes — the label lists 5 fragrance allergens: Linalool, Benzyl Salicylate, Citronellol, ALPHA-ISOMETHYL IONONE and Hexyl Cinnamal. These matter mainly if you have sensitive skin or a known fragrance allergy.

Does Smooth & Shine Conditioner contain fragrance?

Yes — the ingredient list includes Fragrance. Fragrance is declared as a single ingredient, so the individual scent chemicals in it are not named; the label does separately list 5 fragrance allergens (Linalool, Benzyl Salicylate, Citronellol, ALPHA-ISOMETHYL IONONE and Hexyl Cinnamal). This matters mainly if you have sensitive skin or a known fragrance allergy.

Are the claims on the Smooth & Shine Conditioner pack accurate?

Decode Label checked 5 claims against the ingredient list and nutrition panel. "USED BY PROFESSIONALS" — can't be verified from the label. "NEW^" — can't be verified from the label. "Intense moisturisation for salon silky smooth hair" — 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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