Is INOA Post Hair Colour Shampoo safe for sensitive or dry scalps?

The shampoo includes mild surfactants and a conditioning polymer that are generally well tolerated, but it also contains Sodium Laureth Sulfate, fragrance and limonene, which can cause irritation for very sensitive or dry scalps, so a patch test is recommended.

What role does Polyquaternium-10 play in this shampoo?

Polyquaternium-10 is a conditioning polymer that coats hair strands, reduces static, improves manageability, and helps seal the cuticle, which enhances shine and protects hair color.

How often should this shampoo be used and are there any controversial ingredients to be aware of?

For color maintenance, use the shampoo 2 to 3 times per week; daily use may strip color due to the presence of Sodium Laureth Sulfate. The formula also contains parabens (Methylparaben, Ethylparaben) and fragrance components such as limonene, which some consumers consider controversial.

L'Oréal Professionel • 1500ml/50.7oz

INOA Post Hair Colour Shampoo

Hair

Product Insights

INOA Post Hair Colour Shampoo from L'Oreal Professionnel is a 1.5-liter liquid cleanser formulated specifically for color-treated hair. The formula combines a mild surfactant system (Sodium Laureth Sulfate and Disodium Cocoamphodiacetate) with conditioning agents such as Polyquaternium-10 and pH-balancing citric acid to help preserve vibrancy and smoothness. However, the product also contains fragrance, several parabens (Methylparaben, Ethylparaben) and limonene, which may irritate sensitive scalps or trigger allergies in some users.

Comparative Analysis

Positioned as a professional post-color shampoo, it targets salons and consumers seeking to extend dye longevity while delivering gentle cleansing, differentiating itself with conditioning polymers and a pH-adjusted formula despite the inclusion of conventional sulfates and fragrance.

Ingredients

AQUA / WATER • SODIUM LAURETH SULFATE • CITRIC ACID • DISODIUM COCOAMPHODIACETATE • SODIUM HYDROXIDE • SODIUM CHLORIDE • HEXYLENE GLYCOL • POLYQUATERNIUM-10 • SODIUM GLYCOLATE • PEG-60 HYDROGENATED CASTOR OIL • SODIUM BENZOATE • SODIUM METHYLPARABEN • SALICYLIC ACID • LIMONENE • ETHYLPARABEN • TARTARIC ACID • BUTYLPHENYL METHYLPROPIONAL • ALPHA-ISOMETHYL IONONE • PARFUM / FRAGRANCE. C45200/1

84%

35%

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