KÉRASTASE Blond Absolu Blonde Guard Leave-In Milk 1.5 fl oz — Hydrating Heat & UV Protection for Blonde Hair

Kérastase Blond Absolu Blonde Guard Leave-In is a lightweight, hydrating leave-in milk that detangles, brightens and shields blonde hair from heat, UV, chlorine and salt damage.

This leave-in treatment from Kérastase is designed specifically for blondes who want salon-fresh brightness with everyday protection. The formula blends dual-weight hyaluronic acid with antioxidant vitamins to deliver immediate softness and longer-lasting moisture while creating a protective barrier against common aggressors that fade tone and dry hair. It’s intended for use on towel-dried hair and works under both heat styling and air-drying routines.

How does this leave-in protect my blonde from daily stressors?

Blonde Guard blocks many of the environmental and styling causes that make blonde hair dull and brittle. It forms a protective film that reduces direct exposure to UV, heat tools, chlorine and salt, helping color and structure remain intact between salon visits.

• Blocks heat up to 450°F to reduce thermal damage during blow-drying or styling.
• Shields against UV rays that can fade brightness and cause yellowing.
• Resists chlorine and salt water that strip moisture and lift tone.
• Creates a light barrier without weighing hair down.

What hydration and brightening benefits will I see after using it?

The lightweight milk delivers two levels of hyaluronic acid to replenish surface and deeper hydration, making hair feel plumper and less porous. Vitamins C and E contribute antioxidant support and help preserve visual brightness so blondes look fresher for longer.

• Instant detangling and smoothing for easier comb-through.
• Up to three days of noticeable hydration for softer, more manageable hair.
• Clinically tested to maintain salon-like brightness and softness for extended periods.
• Non-greasy finish that enhances natural shine.

How should I apply this product for the best results?

Apply evenly to towel-dried hair, focusing from mid-lengths to ends; do not rinse. You can then blow-dry or let hair air-dry—both methods will benefit from the protective and hydrating properties of the formula.

• Use after cleansing with a blond-specific shampoo and conditioner for layered care.
• Dispense into palms, emulsify, then smooth through lengths and ends.
• Style as usual—safe to use before heat styling up to 450°F.
• Pair with Blond Absolu Bain Lumière and Cicaflash for a complete routine.

Will this leave-in weigh my hair down or leave residue?

No—the formulation is intentionally lightweight and designed to sit on the fiber without buildup. It softens and smooths while preserving movement, making it suitable for fine to thicker blonde hair types when used as directed.

• Light milk texture disperses evenly for non-greasy results.
• Leaves hair soft, with natural-looking shine and no heavy film.
• Suitable for daily use or when extra protection is needed before sun or pool exposure.

Who is this for: Kérastase Blond Absolu Blonde Guard Leave-In is crafted for anyone with natural, colored or highlighted blonde hair who wants targeted hydration, easier detangling and a protective barrier against heat, UV, chlorine and salt. It’s ideal for people who style with heat or spend time outdoors and want to keep blonde tones bright and hair feeling soft between salon treatments.

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