Based on its formula, is this product safe for sensitive scalps or dry hair?

The shampoo is designed for normal to dry hair and includes conditioning ingredients, but the presence of aromatic amines and fragrance means it may cause irritation for very sensitive scalps; a patch test is recommended before full use.

What is the specific role and benefit of p-phenylenediamine sulfate in this shampoo?

p-Phenylenediamine sulfate acts as the main colorant; when activated by hydrogen peroxide it oxidizes to create the dark brown pigments that deposit on the hair shaft, giving the visible color change.

What is the optimal application frequency for this product, and does it contain any controversial chemicals?

For touch-up use, the shampoo is typically applied once a week or whenever the color begins to fade; it contains aromatic amines such as toluene-2,5-diamine and p-phenylenediamine sulfate, which are regarded as potential irritants, so avoid excessive use and always follow the safety guidelines.

Garnier • 20 + 20 ml

Color Sensation Color shampoo retouch châtain foncé

Hair

Product Insights

Color Sensation Color shampoo retouch dark brown is an ammonia-free, shampoo-based hair dye that blends cleansing and coloring in a single step. The formula contains colorants such as p-phenylenediamine sulfate and toluene-2,5-diamine, a peroxide developer, surfactants, conditioning agents and antioxidant vitamin C, delivering quick color refresh while leaving hair feeling soft. However, it also includes aromatic amines and fragrance that can irritate sensitive scalps, so users with allergies or delicate skin should perform a patch test.

Comparative Analysis

This product occupies the niche of at-home, ammonia-free dark-brown touch-up shampoos, offering a one-step color and cleanse solution that differentiates it from traditional two-step dye kits.

Ingredients

1265303 C - Crema Colorante/Crème Colorante/Creme Colorante: AQUA / WATER - ETHANOLAMINE - TOLUENE-2,5-DIAMINE - COCAMIDOPROPYL BETAINE - SODIUM LAURETH SULFATE - HYDROXYBENZOMORPHOLINE - 2-AMINO-3-HYDROXYPYRIDINE - m-AMINOPHENOL - ASCORBIC ACID - SODIUM METABISULFITE - SODIUM CHLORIDE - THIOGLYCERIN - N,N-BIS(2-HYDROXYETHYL)-p-PHENYLENEDIAMINE SULFATE - CARBOMER - ACRYLATES/BEHENETH-25 METHACRYLATE COPOLYMER - ROSA CANINA SEED OIL - EDTA - 2,4-DIAMINOPHENOXYETHANOL HCL - PARFUM / FRAGRANCE (F.I.L. Z70028383/1). - 1203790 D - Crema Reveladora/Crème révélatrice/Creme Revelador: AQUA / WATER - HYDROGEN PEROXIDE - CETEARYL ALCOHOL - CETEARETH-33 - SODIUM SALICYLATE - BEHENETH-10 - PHOSPHORIC ACID - PARAFFINUM LIQUIDUM / MINERAL OIL - TETRASODIUM ETIDRONATE - TETRASODIUM PYROPHOSPHATE

84%

35%

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