KÉRASTASE L'incroyable Blowdry Serum — Strong Hold Heat-Protective Styling Serum, 450°F Protection, Frizz Control

KÉRASTASE L'incroyable Blowdry Serum is a styling serum that delivers strong, flexible hold, high-level heat protection up to 450°F, and frizz control for smooth, restyleable blowouts.

Designed as a multi-benefit pre-styling lotion, this KÉRASTASE formula smooths, protects, and shapes hair during blow-drying or when you use heated tools. Lightweight yet effective, the serum combines polymers, glycerin, and beeswax to lock in shine, manage flyaways, and leave hair workable so you can restyle without stiffness. It pairs with your regular shampoo and conditioner and finishes well under a flexible hairspray for longer-lasting results.

How does L'incroyable Blowdry Serum protect hair from heat styling?

The serum forms a protective shield around each strand that helps defend hair when using blow dryers, flat irons, or curling tools. The thermo-protective system is formulated to withstand temperatures up to 450°F, reducing immediate heat stress while allowing for repeated styling and restyling.

• Heat protection rated up to 450°F for heated tools
• Polymers create a lightweight protective film
• Glycerin helps maintain hydration during styling
• Formulated for repeated restyling without heavy buildup

Will it control frizz and keep a blowout smooth?

Yes — the combination of beeswax and smoothing agents helps tame frizz and flyaways while adding reflective shine. It smooths cuticle irregularities so hair appears sleeker after blow-drying and stays manageable throughout the day.

• Beeswax targets stubborn frizz and humidity
• Leaves a soft, non-greasy finish with visible shine
• Helps lock in a polished blowout without stiffness
• Works on a variety of hair textures for smoother results

How do I use it for best results and restyling?

Apply on towel-dried hair before blow-drying: dispense two pumps for fine to normal hair and distribute evenly from mid-length to ends. Blow-dry and style as desired; the formula keeps hair workable so you can reheat and reshape without needing extra product between styles.

• Use 2 pumps for fine/normal hair; increase slightly for thicker hair
• Apply on towel-dried hair, concentrate on mid-lengths and ends
• Blow-dry to shape; reheating allows easy restyling
• Finish with a flexible hairspray like Laque Couture for extended hold

Is it compatible with my existing KÉRASTASE routine?

The serum integrates smoothly with most KÉRASTASE shampoos, conditioners, and stylers and can be used daily or when you plan to heat-style. It’s formulated to enhance a professional-level blowout while remaining light enough for regular use.

• Works alongside KÉRASTASE treatment and styling collections
• Light texture avoids weighing down fine hair
• Designed for use before heat tools and for restyling sessions
• Complements finishing sprays for long-lasting results

Who is this for? L'incroyable Blowdry Serum is ideal for anyone who frequently blow-dries or uses heated tools and wants a salon-like, frizz-free finish with the freedom to restyle. Suitable for fine to normal hair (use the suggested pump amounts) and effective across many textures, it’s particularly useful if you need heat defense up to 450°F, enhanced shine, and flexible hold without heaviness. If you seek a reliable pre-styling product that smooths, protects, and keeps hair workable, this serum is geared toward active styling routines and professional-quality blowouts.

Ingredients

Aqua/Water, Dimethicone, Cetearyl Alcohol, Cera Alba/Beeswax, Phenyl Trimethicone, Amodimethicone, Polyquaternium-37, Vinylamine/Vinylformamide Copolymer, Dimethiconol, Phenoxyethanol, Trideceth-5, Propylene Glycol Dicaprylate/Dicaprate, Teareth-20, Cetyl Hydroxyethylcellulose, Glycerin, Peg-30 Glyceryl Stearate, Copernicia Cerifera Cera/Carnauba Wax, Hydrogenated Styrene/Butadiene Copolymer, Trideceth-10, Ppg-1 Trideceth-6, Alcohol Denat., Mica, Chlorhexidine Digluconate, Benzyl Salicylate, Ci 77891/Titanium Dioxide, Limonene, Benzyl Alcohol, Linalool, Acetic Acid, Citronellol, Geraniol, Hexyl Cinnamal, Caramel, Hydroxycitronellal, Ci 77491/Iron Oxides, Alpha-Isomethyl Ionone, Parfum/Fragrance.