Is Keratin Smooth Shampoo suitable for sensitive scalps or dry hair?

The shampoo contains sulfate surfactants and a blend of fragrance allergens, which can be irritating for very sensitive or eczema‑prone scalps, but it also includes conditioning agents and marula oil that help moisturize dry hair, making it generally appropriate for normal to slightly dry hair but not the best choice for extremely sensitive scalps.

What is the specific role and benefit of hydrolyzed keratin in this shampoo?

Hydrolyzed keratin provides low‑molecular‑weight protein fragments that can penetrate the hair shaft, helping to replenish lost keratin, improve strength, reduce breakage and leave the hair feeling smoother and more resilient.

How often should Keratin Smooth Shampoo be used and does it contain ingredients that may irritate the scalp?

It is typically recommended for use two to three times per week or as needed for normal hair; the formula includes sulfates, fragrance components and preservatives such as sodium benzoate, which can cause irritation for sensitive users, so frequency should be adjusted based on individual tolerance.

Unilever, Tresemmé • 739 mL

Keratin Smooth Shampoo

Hair

Product Insights

Keratin Smooth Shampoo, marketed by Tresemmé under Unilever, is a 739 mL liquid shampoo sold primarily in Canada. Its formula combines cleansing surfactants such as sodium C12‑13 pareth sulfate and sodium laureth sulfate with conditioning ingredients like hydrolyzed keratin, marula seed oil and glycerin to give hair a smooth, manageable feel. However, the product also contains a high level of fragrance compounds, several synthetic surfactants, PEGs and colorants, which may irritate sensitive scalps or trigger allergic reactions in fragrance‑sensitive users.

Comparative Analysis

Targeted at consumers seeking salon‑style smoothing, Keratin Smooth Shampoo stands out in the mainstream shampoo market by delivering a keratin‑infused formula with marula seed oil for added softness while maintaining the strong fragrance and high‑foaming cleanse typical of mass‑market brands.

Ingredients

AQUA, SODIUM C12-13 PARETH SULFATE, COCAMIDOPROPYL BETAINE GLYCERIN, SODIUM CHLORIDE, SCLEROCARYA BIRREA SEED OIL, HYDROLYZED KERATIN, DIMETHICONOL CITRIC ACID, PARFUM, SODIUM BENZOATE, GLYCOL DISTEARATE, CARBOMER, SODIUM LAURETH SULFATE, GUAR HYDROXYPROPYLTRIMONIUM CHLORIDE, TEA-DODECYLBENZENESULFONATE, PPG-9, COCAMIDE MEA, DISODIUM EDTA, PEG-45M, ALPHA-ISOMETHYL IONONE, BENZYL ALCOHOL, BENZYL SALICYLATE, CITRONELLOL, GERANIOL, HEXYL CINNAMAL, LIMONENE, LINALOOL, CI 77019, CI 77891.

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