KÉRASTASE Blond Absolu Hyaluronic Acid Hair Serum for Bleached & Highlighted Blonde Hair — 1.7 fl oz, Instant Hydration & Repair

KÉRASTASE Blond Absolu Hyaluronic Acid Hair Serum is a lightweight dual-action leave-in treatment that hydrates, repairs surface damage from bleaching, and soothes the scalp for healthier-looking blonde hair.

This salon-grade serum is formulated specifically for bleached and highlighted blonde hair, using a high concentration of pure hyaluronic acid to deliver instant moisture from scalp to ends. Designed as the final step on towel-dried hair, it helps reduce breakage, smooth the hair surface, and bring back shine without weighing fragile strands down. Professionals favor it for its quick absorption and visible smoothing effects after just one use.

How does this serum repair hair damaged by bleaching?

The formula targets surface-level damage caused by lightening services by filling and smoothing the hair fiber, improving manageability and resilience. While it does not change hair structure permanently, a single application visibly reduces roughness and split-end appearance for a healthier finish.

• Contains 2% pure hyaluronic acid to restore moisture and plump the fiber surface
• Smoothes cuticle scales for improved shine and reduced frizz
• Professionally formulated to strengthen delicate blonde strands and lower breakage risk

Will this soothe a dry or irritated scalp?

The concentrated hyaluronic acid in the serum helps hydrate and relieve dryness at the scalp while being lightweight enough to avoid greasing the roots. Applied with a gentle massage, it helps calm discomfort from dryness and supports a healthier environment for hair.

• Soothes scalp dryness through targeted topical hydration
• Designed to be massaged into scalp without heavy residue
• Suitable for use after chemical lightening to help rebalance moisture

How and when should I use the Blond Absolu Hyaluronic Acid Hair Serum?

Apply the serum as the last step on towel-dried hair and scalp. Dispense the recommended doses, massage with fingers into the scalp, then work through mid-lengths to ends; do not rinse. It can be used after every wash or anytime the hair needs a moisture and shine boost.

• Apply 7–13 doses depending on hair length and density
• Best on towel-dried hair for optimal absorption and styling results
• Leave in; no rinse required so benefits last until next wash

How does this serum fit into a blonde-care routine?

Use it as the finishing step after cleansing and conditioning with color-protecting products to lock in hydration and enhance luminosity. Paired with the Blond Absolu range, it complements anti-brass treatments and fiber-repairing masks for a full regimen that preserves tone and health.

• Complements Blond Absolu shampoos, masks, and UV anti-brass care
• Boosts shine and reduces surface damage between salon appointments
• Recommended by professionals for post-lightening maintenance

Who is this for: KÉRASTASE Blond Absolu Hyaluronic Acid Hair Serum is made for people with bleached, highlighted, or lightened blonde hair seeking immediate hydration, smoother surface texture, and scalp relief without adding weight. It suits fine to medium strands that need protective conditioning and shine, and it integrates well into professional and at-home blonde care routines.

Ingredients

AQUA / WATER / EAU • GLYCERIN • SODIUM HYALURONATE • HYDROXYETHYLPIPERAZINE ETHANE SULFONIC ACID • PHENOXYETHANOL • CITRIC ACID • PEG-40 HYDROGENATED CASTOR OIL • CHLORPHENESIN • TETRASODIUM GLUTAMATE DIACETATE • LIMONENE • PARFUM / FRAGRANCE