KÉRASTASE Blond Absolu Blonde Guard Leave-In Milk — 6.4 fl oz Hydrating, Heat & UV Protection for Blonde Hair

This leave-in treatment from KÉRASTASE is formulated specifically for bleached, highlighted and natural blonde hair to restore moisture, protect fragile strands and maintain salon-bright tone between washes. The formula blends dual-weight hyaluronic acid with vitamins C and E to deliver layered hydration and antioxidant support without weighing hair down. Designed for daily use on towel-dried hair, it works before styling to protect from heat up to 450°F and environmental aggressors, while improving combability and shine.

How does this leave-in protect blondes from heat and outdoor damage?

The Blonde Guard Leave-In creates a protective veil that blocks common blonde aggressors. It is formulated to resist heat styling up to 450°F, and contains ingredients that help defend against UV, chlorine and salt water exposure so color and fiber integrity are preserved.

• Shields hair from heat up to 450°F during styling
• Helps block UV radiation and environmental fading
• Protects against chlorine and salt water damage
• Lightweight formula avoids buildup while protecting

Will it actually hydrate and detangle my hair without greasiness?

Yes — the leave-in uses dual-weight hyaluronic acid to provide immediate surface softness and deeper moisture down the fiber. The result is easier detangling, plumper strands and a lightweight feel that doesn’t weigh fine blonde hair down.

• Dual-weight hyaluronic acid for multi-level hydration
• Instant slip for smoother combing and reduced breakage
• Leaves hair soft, not oily, suitable for fine to thick blondes

How does it help maintain salon-bright color and shine?

The formula combines brightening hydration technology with antioxidant vitamins to support long-lasting color vibrancy. Clinically supported ingredients work to preserve brightness and softness so color appears fresher between salon visits.

• Vitamins C and E help protect color from oxidative fading
• Brightening hydration keeps tone luminous and reflective
• Regular use supports up to two months of salon-fresh brightness

How should I apply it for best results?

Apply to towel-dried hair, distributing evenly from mid-lengths to ends; do not rinse. Follow with blow-drying or air-drying and combine with the Blond Absolu Bain Lumière and Cicaflash for a complete routine that maximizes brightness and softness.

• Use on towel-dried hair, spray or pump evenly through lengths and ends
• Do not rinse — style as usual with heat protection already in place
• Pair with Blond Absolu shampoo and mask for optimal results

Who is this for: Kérastase Blond Absolu Blonde Guard Leave-In is aimed at anyone with bleached, highlighted or natural blonde hair seeking daily hydration, easier detangling and reliable protection from heat and environmental stressors. It suits fine to thick hair types that need weightless moisture and color care between salon services.

Ingredients

AQUA / WATER / EAU • COCOS NUCIFERA OIL / COCONUT OIL • AMODIMETHICONE • POLYQUATERNIUM-37 • PHENOXYETHANOL • PROPYLENE GLYCOL DICAPRYLATE/DICAPRATE • SODIUM HYDROXIDE • TOCOPHEROL • DIMETHICONE PEG-7 PHOSPHATE • PPG-1 TRIDECETH-6 • TETRAMETHYL ACETYLOCTAHYDRONAPHTHALENES • TRIDECETH-6 • BEHENTRIMONIUM CHLORIDE • SODIUM HYALURONATE • XYLOSE • ETHYLHEXYLGLYCERIN • CARVONE • CITRUS AURANTIUM PEEL OIL • LIMONENE • LINALYL ACETATE • ACRYLATES/STEARYL METHACRYLATE COPOLYMER • LINALOOL • SORBITAN OLEATE • ISOPROPYL ALCOHOL • CETRIMONIUM CHLORIDE • HYDROLYZED VEGETABLE PROTEIN PG-PROPYL SILANETRIOL • GERANIOL • ASCORBYL GLUCOSIDE • CITRIC ACID • PINENE • GERANYL ACETATE • CITRUS AURANTIUM BERGAMIA PEEL OIL • EDTA • CITRAL • TERPINEOL • CAMPHOR • ROSE KETONES • SODIUM BENZOATE • POTASSIUM SORBATE • PARFUM / FRAGRANCE