KÉRASTASE Heat Protecting Spray for Fine to Medium Dry Hair — 5.1 oz, Lightweight Heat & Frizz Protection

KÉRASTASE Nutritive Heat Protecting Spray is a lightweight, leave-in thermal shield that detangles, reduces frizz and protects fine to medium dry hair from heat up to 450°F.

Designed to sit between your conditioner and styling routine, this lotion-thermique-style spray delivers hydration while forming a protective barrier against hot tools. Infused with plant-based proteins and niacinamide, it helps hair feel softer and look shinier without weighing strands down. Use it on towel-dried hair before blow-drying or heat styling to minimize breakage and tame flyaways.

How does this spray protect hair during heat styling?

The formula creates a lightweight film that resists high temperatures, helping reduce the mechanical stress and moisture loss that occur with heated tools. Protection up to 450°F helps preserve hair integrity during frequent styling sessions.

• Thermal barrier designed for blow-dryers, flat irons, and curling wands
• Helps reduce breakage caused by heat and friction
• Lightweight feel preserves natural movement and volume

Will it help with frizz and detangling on dry, fragile hair?

Yes — the spray blends nourishing ingredients that smooth the cuticle, making hair easier to comb and style. You’ll notice reduced flyaways and a softer surface, which creates a polished finish after styling.

• Reduces frizz and flyaways for a neater appearance
• Aids combing to cut down on breakage while detangling
• Adds visible shine for a healthy-looking finish

What key ingredients support hair nourishment?

The product relies on plant-based proteins to replenish nutrients and niacinamide to help retain moisture and strengthen fibers. These act together to hydrate lengths and improve manageability over time without leaving residue.

• Plant-based proteins to nourish and support hair structure
• Niacinamide to lock in moisture and promote flexible strands
• Non-greasy formulation suited to fine and medium textures

How should I use it for best results?

Apply to clean, towel-dried hair and work the spray through lengths and ends—no rinsing required. Follow with blow-drying or let hair air-dry, then heat style as needed for long-lasting protection and smoother results.

• Spray evenly on towel-dried hair, concentrate on mid-lengths to ends
• Massage in; do not rinse
• Blow-dry or air-dry, then finish with heat styling up to 450°F

Who is this for: KÉRASTASE Nutritive Heat Protecting Spray is tailored for people with fine to medium dry hair who want a lightweight leave-in that hydrates, eases detangling and shields hair from styling heat. If your routine includes frequent blow-drying or hot tools and you need to control frizz without heavy silicones or limpness, this spray provides salon-level protection and a shinier, smoother look.

Ingredients

Aqua / Water / Eau, Niacinamide, Polyquaternium-37, Propylene Glycol Dicaprylate/Dicaprate, Citric Acid, Polysorbate 20, Quaternium-87, Stearyl Alcohol, Glycine Soja Oil / Soybean Oil, Sodium Benzoate, Caprylyl Glycol, Behentrimonium Chloride, Ppg-1 Trideceth-6, Panthenol, Ascorbyl Glucoside, Butylene Glycol, Candelilla Cera / Candelilla Wax / Cire De Candelilla, Propylene Glycol, Linalool, Hydroxycitronellal, Isopropyl Alcohol, Sorbitan Oleate, Benzyl Salicylate, Benzyl Alcohol, Hexyl Cinnamal, Polyquaternium-11, Citronellol, Hydrolyzed Wheat Protein, Alpha-Isomethyl Ionone, Coumarin, Hydrolyzed Corn Protein, Hydrolyzed Soy Protein, Limonene, Iris Florentina Root Extract, Phenoxyethanol, Parfum / Fragrance.