Kérastase Première Bain Décalcifiant Réparateur is a sulphate-free decalcifying repair shampoo for damaged hair stressed by hard water. It gently removes the mineral build-up that weakens and dulls hair while reinforcing the fibre — leaving strands cleaner, stronger and visibly revived.

Benefits
  • Removes hard-water build-up — a decalcifying complex lifts the mineral deposits that weaken hair.
  • Reinforces damaged hair — strengthens the fibre to reduce breakage.
  • Gentle, sulphate-free cleanse — washes without stripping colour or moisture.
  • Lighter, shinier hair — leaves strands clean and ready to style.
How to use
  1. Massage a small amount through wet hair to a rich lather.
  2. Rinse well, and repeat for a deeper cleanse if needed.
  3. Follow with Fondant Fluidité Réparateur conditioner or Masque Filler Réparateur.
Who it's for

Best for damaged, brittle hair affected by hard-water mineral build-up. Learn how to repair damaged hair, read the damaged hair guide, or explore the full Kérastase range.

Specifications

Brand
Kérastase
Size
250ml
Format
Liquid
Hair concerns
Damaged, Breakage, Weak Hair, Porous, Hard Water, Dull, Colour-Treated
Suitable for
Damaged,Brittle,All hair types
Good to know
Sulphate-free

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Why our stylists rate it
From the Partners Hair team
Kérastase Première Bain Décalcifiant Réparateur is a sulfate-free decalcifying repair shampoo for all types of damaged hair. Part of the Kérastase Première range — designed to eliminate calcium buildup from hard water while gently cleansing. The second step of the Première routine, layered directly over the Concentré pre-shampoo treatment for maximum effect.

Best for: hair that feels stiff, dull, or rough from hard-water exposure; over-processed, bleached, coloured, or heat-damaged lengths showing persistent fatigue; weekly or twice-weekly use as the cleansing step in the Première routine (layered over Concentré Décalcifiant Ultra-Réparateur and followed by Fondant Fluidité Réparateur or Masque Filler Réparateur).
Less suited to: hair primarily concerned with breakage from structural damage rather than calcium (use Resistance Bain Force Architecte); fine or thinning hair where density is the priority (use Densifique Bain Densité); colour-treated hair where colour care is the focus (use Chroma Absolu Bain Chroma Respect); oily or sensitive scalp concerns (use Spécifique range — Bain Divalent or Dermo-Calm).

Key actives:
- Citric Acid (AHA) — organic acid that continues decalcification at the surface; lowers excess calcium responsible for stiffness and dullness
- Glycine — amino acid that penetrates and rebuilds internal bonds between keratin chains
- Gentle, sulfate-free surfactant base (Sodium Cocoyl Isethionate, Disodium Laureth Sulfosuccinate, Sodium Lauryl Sulfoacetate) — cleanses without stripping or aggravating chemically-treated hair
- Glycerin — humectant; helps maintain hydration during cleansing

Benefits:
- Gently cleanses the scalp and hair while removing calcium buildup
- Neutralises stiffness, dullness, and that 'rough' hard-water feel
- 99% of original strength restored (Kérastase instrumental test with full Première system)
- +73% more shine, 2x softer hair, +93% strength
- Sulfate-free, suitable for colour-treated and chemically processed hair

How to use: After massaging Concentré Décalcifiant Ultra-Réparateur into wet hair, apply a quarter-sized amount of Bain Décalcifiant directly over it as a second layer. Add water to lather, massage from ends to scalp, then rinse thoroughly. Follow with Fondant Fluidité Réparateur (fine to medium hair) or Masque Filler Réparateur (medium to thick hair).

Format: 250ml sulfate-free shampoo.

Authorised Kérastase stockist — 100% authentic, sourced from the official South African distributor. Free delivery on orders over R390 across South Africa.
Delivery without the guesswork

Spend R390 and delivery is on us. Orders under R390 are delivered for R67. We normally pack within 1 working day, with delivery in 2–5 working days depending on your location.

Changed your mind? You have 7 days after receiving your order to request a return. Email hello@partnershair.co.za to get started.

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