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

KÉRASTASE L'incroyable Blowdry Serum is a multi-benefit styling serum that shields hair up to 450°F, tames frizz, and delivers a workable, strong hold for long-lasting blowouts and easy restyling.

Whether you blow-dry daily or touch up with hot tools, this lightweight serum acts as both a thermal barrier and a styling aide. Formulated with beeswax, glycerin, and polymers, it smooths strands, adds shine, and keeps hair flexible so styles can be reshaped without stiffness. Use it on towel-dried hair before heat styling to protect, shape, and maintain a polished finish.

How does this serum protect hair from heat damage?

The formula specifically provides thermo-protection up to 450°F, creating a protective layer around each strand that reduces direct heat contact during blow-drying and flat-ironing. That defensive film helps preserve surface smoothness and prevents immediate overheating while you style. Protection is paired with conditioning ingredients so hair stays manageable, not crunchy.

• Thermal shield rated to 450°F for hot tools
• Beeswax and polymers form a protective film
• Glycerin helps retain moisture during styling
• Lightweight texture avoids weighing hair down

Will it control frizz and keep hair shiny without stiffness?

Yes — the serum targets frizz while preserving a natural, flexible hold that allows restyling. Its blend of smoothing agents reduces flyaways and surface roughness, producing a polished look with reflective shine. Because the hold is flexible, hair moves naturally rather than feeling set in place.

• Extreme frizz control for blown-out styles
• Leaves hair soft and supple, not rigid
• Polymers lock in shape while allowing movement
• Designed to boost surface shine for a healthy finish

How do I use it for best results on my hair type?

For fine to normal hair, dispense two pumps into palms, rub together, and evenly distribute through towel-dried hair focusing on mid-lengths and ends. Blow-dry as desired and touch up with hot tools when you want to reshape — the formula supports repeated restyling. Adjust the amount if your hair is thicker or denser.

• Apply to towel-dried hair before heat styling
• Two pumps recommended for fine to normal hair
• Concentrate on mid-lengths and ends to avoid root heaviness
• Finish with a flexible hairspray for longer hold, if desired

Can I incorporate it into my regular haircare routine?

Absolutely — it works as a styling step after cleansing and conditioning and before blow-drying. Use with your favorite KÉRASTASE shampoo and conditioner, then follow with this serum to prep hair for heat and shape. For extended style maintenance, pair it with a light hold hairspray from the same collection.

• Use after shampoo and conditioner on towel-dried hair
• Compatible with all KÉRASTASE treatment routines
• Plays well with finishing products like Laque Couture
• Suitable for daily styling or occasional heat use

Who is this for: KÉRASTASE L'incroyable Blowdry Serum is ideal for anyone who uses a blow dryer or heated tools and wants frizz control, thermal protection, and a flexible strong hold without heaviness. It’s especially suited to fine-to-normal hair seeking long-lasting smoothness and shine, but can be adapted for thicker hair by adjusting the dose. If you want polished, restyle-friendly blowouts and confidence when using heat tools, this serum fits into your styling routine.

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.