The Kérastase Première Decalcifying Repair Shampoo is a sulfate-free, professional-grade shampoo that removes the calcium buildup left by hard water to repair over-processed and damaged hair. Formulated with pure citric acid and glycine, this decalcifying shampoo gently cleanses the scalp while restoring strength from the inside out, leaving hair visibly stronger, smoother, and shinier with every wash. It is a go-to for hair stressed by hard water, colouring, or bleaching.

Why the Kérastase Première Decalcifying Shampoo Works

Hard water deposits calcium on the hair fibre, and on already damaged or lightened hair this leaves strands dull, stiff, and prone to breakage. This shampoo uses a dual action to reverse that: citric acid dissolves the excess calcium from core to surface, while glycine rebuilds the internal structure of the fibre. The creamy formula transforms into a rich foam that cleanses without stripping.

Ideal For

This shampoo is made for all types of damaged, over-processed, colour-treated, or bleached hair, and is especially suited to anyone dealing with the effects of hard water. If your hair feels dull, rough, or brittle after washing, the decalcifying formula helps restore softness and shine. Its professional-grade, sulfate-free base makes it a gentle option for salon-quality results at home in the UAE, where hard water is common.

Every wash targets the root cause of hard-water damage with a focused, sulfate-free formula:

• Pure citric acid: dissolves and neutralises calcium overdose from shower water, counteracting the dullness and stiffness it causes

• Glycine: once calcium is removed, it strengthens the hair fibre's internal structure to reduce breakage and restore resilience

In instrumental testing after six applications, the shampoo left hair 73% shinier, twice as smooth, and measurably stronger. The bottle is made from 95% recycled plastic, excluding the cap, colourants, and additives.

1. Apply to wet hair, ideally layered over the Première Decalcifying Repairing Pre-Shampoo Treatment without rinsing first, for maximum results.

2. Massage from ends to scalp, adding a little water to work up a rich lather.

3. Rinse thoroughly.

Follow with a Première conditioner or mask. For hard-water damage, use as your regular shampoo two to three times a week.