KÉRASTASE L'incroyable Blowdry Serum — Heat Protection to 450°F, Strong Flexible Hold & Frizz Control

KÉRASTASE L'incroyable Blowdry Serum is a styling serum that protects hair from heat up to 450°F while delivering strong, flexible hold and frizz control for smooth, restylable blowouts.

This lightweight styling serum combines heat defense with shaping polymers and conditioning agents to help you achieve a long-lasting blown-out finish. Formulated for easy application before blow-drying, it smooths hair, tames flyaways and leaves fiber feeling soft and glossy without stiffness. The product is designed to let you restyle with heat tools throughout the day while maintaining structure and shine.

How does this serum protect hair during heat styling?

The formula creates a thermal barrier that helps shield hair from elevated temperatures up to 450°F, reducing immediate heat stress while supporting style longevity. It layers with your regular shampoo and conditioner, so protection is delivered during hot-tool use without adding heavy buildup.

• Thermo-protection rated to 450°F for heat tool safety.
• Polymers form a flexible film that preserves shape under heat.
• Lightweight application avoids product heaviness or residue.

Will L'incroyable Blowdry Serum control frizz and add shine?

Yes — the blend of beeswax, glycerin and styling polymers helps smooth the hair surface and lock down flyaways for a polished finish. The ingredients also contribute to perceived softness and light-reflective shine without leaving hair sticky or crunchy.

• Beeswax smooths cuticle irregularities to reduce frizz.
• Glycerin helps retain moisture so strands look hydrated and glossy.
• Polymers provide a flexible hold that maintains movement and sheen.

How do I use it for best results and restyling?

Dispense two pumps for fine-to-normal hair and distribute evenly through towel-damp hair before blow-drying. Style as usual; the hold is flexible so you can rework your look with heat tools without reapplying product, making it practical for quick touch-ups.

• Apply to towel-dried hair — two pumps for fine/normal lengths.
• Blow-dry to shape; use a round brush or paddle as desired.
• Restyle later with heat tools; layer with a light hairspray for extra longevity.

Can this be used with other styling products in my routine?

The serum integrates smoothly into existing regimens and plays well with finishing sprays or texturizers. For a finished, flexible hold that preserves your blowout, pair it with KÉRASTASE Laque Couture hairspray or your preferred lightweight finish product.

• Compatible with regular shampoo and conditioner steps.
• Layer under finishing sprays for added hold without stiffness.
• Can be combined with other KÉRASTASE styling pieces for tailored results.

Who is this for? KÉRASTASE L'incroyable Blowdry Serum suits people seeking a salon-like, smooth blowout with flexible hold: especially those with fine to normal hair who want heat protection, frizz control and effortless restyling. It’s also a fit for anyone who uses hot tools regularly and prefers a lightweight finish that enhances shine and manageability without sacrificing movement.

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.