Kerastase Blond Absolu 2% Pure Hyaluronic Acid Scalp Serum

Size: 50ml

A lightweight, dual-action serum that repairs hair and soothes the scalp, formulated with pure hyaluronic acid to condition blonde hair and provide instant hydration.
Introduce the iconic skincare ingredient, hyaluronic acid, to your hair-care routine with this dual-action, leave-in serum. The two percent pure hyaluronic acid in this serum will soothe the scalp and instantly hydrate hair. From scalp to ends, this serum is loved by professionals to create healthy-looking, shiny blonde hair. It’s most effective when applied to wet or towel-dried hair to activate the hyaluronic acid ingredient.
In a controlled study using Blond Absolu Hyaluronic Acid Hair Serum, results showed (vs. non-conditioned shampoo):
- Reduces breakage, +45% stronger hair
- Instantly moisturizes for +25 % more hydrated hair

✔ This Kérastase scalp serum repairs damage in one use for stronger blonde hair.
✔ Intensely and instantly hydrates scalp and hair for long-lasting hydration.
✔ Relieves and comforts scalp, while preserving the scalp barrier.

Repairs damages in one use*
96% stronger blonde hair**
3 days ultimate hydration **
Hydrated scalp***
Preserves scalp barrier***

*Surface damage. Instrumental test after application of 2% pure hyaluronic acid serum.
**Instrumental test after application of Bain Lumière, Cicaflash and 2% Pure Hyaluronic Acid Serum.
***Instrumental clinical test after application of 2% Pure Hyaluronic Acid Serum.


  • Repairs up to one year of surface damage caused by blonding or lightening services in one use
  • Soothes and protects against scalp dryness
  • Instantly hydrates and adds shine to hair

How to use:

  • STEP 1: Apply the Hyaluronic Acid Serum for hair to towel-dried hair. 7 to 13 doses depending on the length and 7 doses on the scalp. 1 dose = 1 pump.
  • STEP 2: Massage gently. Seal ends with Huile Cicaextreme for ultimate repair and hydration.
  • STEP 3: Proceed to blow dry or air dry.

    Pro tip:

    • Use after your first wash post in-salon color service to instantly repair damage from lightening services, soothe, and add hydration.
    • For ultimate repair and hydration, pair with Blond Absolu Strengthening Hair Oil for Very Damaged Blonde Hair (sold separately).


    Key Ingredient: Hyaluronic Acid fills and heals fiber wounds from within for a uniform, deeply nourished cuticle. This ultra concentrated acid strengthens hair and hydrates scalp, preventing future breakage.

    • AQUA / WATER / EAU 
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