Resistance Shampoo
A shampoo designed to strengthen and repair damaged hair. Contains sulfates, parabens, and artificial fragrance, packaged in plastic.
How scores are calculated
Materials (40%): How plastic-free the product is — raw materials, construction, and coatings.
Packaging (20%): Is the product packaged in plastic? Is it recyclable?
Transparency (20%): Does the brand disclose ingredients, sourcing, and manufacturing?
Durability (20%): How long does it last? Longer-lasting products reduce plastic waste over time.
This is a rating of this specific product only — not the company. Other products from this brand may score differently.
Last updated: April 8, 2026
Contains plastic packaging, sulfates, parabens, artificial fragrance, and alcohol denat. These ingredients can be harsh and potentially irritating.
Why We Rated It This Way
Kerastase's Resistance Shampoo is made from Plastic bottle, shampoo liquid (Water, Sodium Laureth Sulfate, Disodium Cocoamphodiacetate, Glycol Distearate, Sodium Laureth-8 Sulfate, Hexylene Glycol, Sodium Chloride, Sodium Benzoate, Sodium Methylparaben, Magnesium Laureth-8 Sulfate, Magnesium Laureth Sulfate, Sodium Oleth Sulfate, Hydroxypropyl Guar Hydroxypropyltrimonium Chloride, Alcohol Denat, Polyquaternium-30, Salicylic Acid, Ethylparaben, Carbomer, Magnesium Oleth Sulfate, Butylphenyl Methy
Chemical & Health Analysis
Each chemical of concern is broken down below — what it is, where it comes from in this product, what it does to the body, and who is most at risk.
Various plastic chemicals
Kerastase Resistance Shampoo
Potential skin irritation from sulfates and alcohol, and sensitization from fragrance and parabens.
All health claims are based on published, peer-reviewed research from the NIH, WHO, IARC, and peer-reviewed journals. This information is for educational purposes and does not constitute medical advice.
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