Is Kertyol PSO safe for sensitive or dry scalp and hair types?

The shampoo contains sodium laureth sulfate, fragrance, and methylisothiazolinone, which can be irritating, so it is best suited for normal to oily scalp; users with sensitive or very dry hair should patch-test or choose a milder, sulfate-free alternative.

What does salicylic acid do in Kertyol PSO, and how does it benefit the scalp?

Salicylic acid is a beta-hydroxy acid that gently exfoliates dead skin cells and excess sebum, helping to clear dandruff, reduce scalp oiliness, and soothe irritation when used regularly.

How often should Kertyol PSO be used, and does it contain any controversial ingredients?

It is recommended to apply the shampoo 2-3 times per week or as directed; the formula includes sodium laureth sulfate, methylisothiazolinone, and hexyl cinnamal, which are often flagged for irritation or allergy potential, so users should monitor their skin response.

Pierre Fabre • 200 ml

Kertyol PSO

Hair

Product Insights

Kertyol PSO is a 200 ml French shampoo that blends surfactants like sodium laureth sulfate and sodium cocoamphoacetate with keratolytic salicylic acid and anti-itch crotamiton to cleanse the scalp and reduce dandruff. The formula also includes PEG-18 glyceryl oleate, coco-glucoside and glyceryl oleate for conditioning, while a fragrance mix containing hexyl cinnamal and the preservative methylisothiazolinone may provoke reactions in fragrance-sensitive users. Packaged in a plastic bottle for regular use on normal to oily hair, it is advisable for individuals with a sensitive scalp to perform a patch test before full application.

Comparative Analysis

Positioned as a therapeutic anti-dandruff shampoo, Kertyol PSO differentiates itself in the French market by pairing a strong surfactant system with salicylic acid and crotamiton for scalp exfoliation and itch relief, targeting consumers who need medicated scalp care.

Ingredients

water (aqua), sodium laureth sulfate, sodium cocoamphoacetate, salicylic acid, peg-18 glyceryl oleate/cocoate glycolic acid, sodium hydroxide, sodium shale oil, sulfonate undecylenamidopropyl betaine, acetamide MEA, coco-glucoside, crotamiton, fragrance (parfum), glyceryl oleate, hexyl cinnamal, methylisothiazolinone, sodium chloride, styrene/acrylates copolymer.

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