KÉRASTASE Discipline Fluidissime Leave-In Anti-Frizz Spray — Heat Protects to 450°F, Smooths Flyaways & Adds Shine

KÉRASTASE Discipline Fluidissime is a leave-in anti-frizz spray that smooths flyaways, adds shine and protects hair from heat up to 450°F while delivering up to 72 hours of frizz control.

Lightweight and formulated for unruly or humidity-prone hair, Fluidissime from KÉRASTASE’s Discipline line combines Morpho-Keratin and Xylose to even out and smooth hair fibers. It works as both a styling aid and a thermal shield, helping hair feel softer, look glossier, and dry more quickly when blow-drying. Use it alone or paired with a smoothing shampoo and mask for fuller discipline and manageability.

How does this leave-in treatment reduce frizz and tame flyaways?

Fluidissime binds to the hair surface to smooth irregularities along the fiber, reducing the surface friction that causes frizz and stray strands. Its ingredients help realign the cuticle so light reflects evenly, producing visible shine without weighing hair down.

• Morpho-Keratin and Xylose to smooth and fortify fibers
• Light emollients that settle on the hair surface without heavy residue
• Creates a flexible film that controls flyaways and static

What heat protection does it offer when styling?

Designed for thermal styling, Fluidissime delivers protection against high temperatures up to 450°F (about 230°C), helping minimize heat stress during blow-drying, straightening, or curling. It’s formulated to be compatible with hot tools while keeping hair manageable and glossy.

• Thermo-protection rated up to 450°F / 230°C
• Helps reduce breakage caused by repeated hot-tool exposure
• Speeds up blow-drying for less overall heat exposure

How do you apply this spray for best results?

Apply to clean, towel-dried hair for the most effective smoothing and protection. Shake the bottle, mist 4–5 sprays through lengths, work through with fingertips, then comb to distribute evenly; air-dry or blow-dry—do not rinse out.

• Shake before use, spray 4–5 times on towel-dried hair
• Finger-work and comb to ensure even coverage along lengths
• Air-dry or blow-dry to activate smoothing and thermal protection

Will this product work with my existing Discipline routine?

Yes—Fluidissime is formulated to complement KÉRASTASE Discipline shampoo and mask products. When used together, they cleanse, detangle, smooth and protect the fiber more comprehensively than a single step.

• Pair with Discipline smoothing shampoo for cleaner, softer hair
• Use after a Discipline mask to lock in detangling and manageability
• Finish styling with Fluidissime for heat protection and lasting control

Who is this for: Fluidissime is aimed at people with frizz-prone, unruly, or coarse hair who want a lightweight leave-in that improves smoothness, enhances shine and defends against high heat during styling. It suits anyone seeking quicker blow-dry times and up to three days of improved frizz control when used as directed.

Ingredients

Water, Amodimethicone, Trideceth-5, Peg-40 Hydrogenated Castor Oil, Polyquaternium-37, Propylene Glycol Dicaprylate/Dicaprate, Glycerin, Trideceth-10, Phenyl Trimethicone, Phenoxyethanol, Arginine, Glutamic Acid, Ppg-1 Trideceth-6, Benzyl Salicylate, Serine, Hydroxypropyltrimonium Hydrolyzed Wheat Protein, Chlorhexidine Digluconate, Benzyl Alcohol, Quaternium-87, 2-Oleamido-1,3-Octadecanediol, Xylose, Linalool, Alpha-Isomethyl Ionone, Geraniol, Citronellol, Cinnamyl Alcohol, Fragrance.