Is the Repair Shampoo suitable for sensitive, acne‑prone, or dry scalps?

The shampoo uses Sodium Laureth Sulfate, a potent cleanser that can strip moisture, and it contains fragrance allergens such as limonene, linalool and benzyl alcohol, so it may cause irritation on highly sensitive or eczema‑prone scalps, while dry hair may feel overly stripped despite the conditioning agents.

What role does Undaria pinnatifida extract play in this shampoo?

Undaria pinnatifida extract is a seaweed‑derived ingredient rich in minerals and antioxidants; it helps reinforce the hair shaft, adds moisture, and supports scalp health, contributing to the product’s claimed repair benefits.

How often should this shampoo be used and does it contain any controversial chemicals?

For most users, applying the shampoo two to three times per week is recommended; the formula includes Sodium Laureth Sulfate, fragrance allergens, and preservatives such as sodium benzoate and phenoxyethanol, which some consumers view as controversial, though they comply with regulatory safety limits.

Henkel, Syoss • 440 ml

Repair Shampoo

Hair

Product Insights

The Repair Shampoo by Syoss (Henkel) is a 440 ml plastic‑bottled cleanser formulated to strengthen and restore hair, featuring surfactants such as Sodium Laureth Sulfate and Cocamidopropyl Betaine‑PEG‑7 together with conditioning agents like Dimethicone and Glyceryl Cocoate. Its formula also includes a marine extract of Undaria pinnatifida, amino acids glycine and lysine, and a light silicone finish for smoothness, making it suitable for everyday use on damaged or chemically treated hair. However, the product contains fragrance allergens (limonene, linalool, benzyl alcohol) and a suite of preservatives (sodium benzoate, phenoxyethanol) that may irritate sensitive scalps, and its reliance on the strong detergent sodium laureth sulfate can be drying for very dry hair types.

Comparative Analysis

Positioned as a repair‑focused shampoo in the mass‑market segment, this Syoss formula differentiates itself with marine Undaria extract and an amino‑acid complex while competing against other drugstore repair shampoos that typically rely on standard surfactants alone.

Ingredients

INGREDIENTS: Aqua, Sodium laureth Sulfate, Cocamidopropyl Betaine-PEG-7, Glyceryl Cocoate, Sodium Chloride, Undaria Pinnatifida Extract, Glycine, Lysine HCI, Disodium Cocoamphodiacetate, Parfum, Sodium Benzoate, Citric Acid, Cocamide HEA, Dimethicone, Glycol Distearate, Hydrogenated Castor Oil, Guar Hydroxypropyltrimonium Chloride, Laureth-4-Glycerin, Sodium Hydroxide, Laureth-23, Limonene, Linalool, Propylene Glycol, Salicylic Acid, Benzyl Alcohol, Phenoxyethanol, Sodium Metabisulfite 2

84%

35%

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