KÉRASTASE Nutritive 8H Magic Night Serum Overnight Treatment for Dry Hair, Plant Proteins & Niacinamide

KÉRASTASE Nutritive 8H Magic Night Serum is an overnight leave-in treatment that intensely hydrates, detangles and reduces frizz so hair wakes soft, shiny and manageable.

Designed to work while you sleep, this lightweight serum combines plant-based proteins and niacinamide to replenish moisture, support strand resilience and minimize friction from pillows. The formula absorbs without transferring, letting nutrients sink into lengths and ends for visible softness and improved shine by morning. It’s intended as a simple addition to an evening routine—apply 1–2 pumps to dry or damp hair a few nights per week and leave in.

How does this serum repair dry hair overnight?

The serum delivers concentrated hydration and protein-rich support to weakened areas of the hair shaft while you rest. Niacinamide helps the hair retain moisture, and plant proteins add conditioning building blocks that smooth and strengthen cuticles. Because it’s a leave-in night product, active ingredients have extended contact time for deeper replenishment than a rinse-out treatment.

• Contains niacinamide to lock in hydration and improve moisture retention.
• Plant-based proteins nourish and help reinforce weakened fiber.
• Lightweight, fast-absorbing texture avoids pillow transfer.
• Overnight contact time maximizes absorption and visible softness by morning.

Will it help with frizz and tangles for morning styling?

Yes—the serum targets friction and surface roughness, reducing frizz and improving detangling at wake-up. By smoothing the hair cuticle, it makes combing or brushing easier and reduces breakage from knots. The result is hair that styles more predictably and shows a healthier-looking shine.

• Protects hair from pillow friction to reduce morning frizz.
• Detangles lengths and ends for gentler brushing.
• Smoother cuticle leads to enhanced natural shine and manageability.
• Works well under nighttime wraps or silk pillowcases for extra protection.

How do you use the 8H Magic Night Serum in a routine?

Apply one to two pumps before bed to towel-dried or dry hair, focusing on the mids and ends where dryness is most common. Massage evenly and leave the serum in—no rinsing required in the morning. For most users, repeating the treatment about three nights a week balances nourishment without weighing hair down.

• Apply 1–2 pumps to lengths and ends of dry or damp hair.
• Massage in, then leave the product in overnight; do not rinse.
• Use three nights per week or as needed for extra hydration.
• Combine with Nutritive conditioner or mask for a full nourishing regimen.

Is this suitable for my hair type and concerns?

The Nutritive serum is formulated primarily for hair prone to dryness but is gentle enough for most textures when used as directed. It enhances moisture and shine without heavy residue when used sparingly; fine-haired users should apply mainly to ends. For best results, integrate it with KÉRASTASE conditioners, masks and daytime heat protectants to address multiple concerns.

• Ideal for dry, dull or frizz-prone hair needing overnight nourishment.
• Works on straight, wavy, curly and coily textures; adjust amount by thickness.
• Fine hair: focus on mid-lengths to ends to avoid weighing roots.
• Recommended alongside Nutritive collection products for comprehensive care.

Who is this for: KÉRASTASE Nutritive 8H Magic Night Serum suits someone who wants a low-effort, high-impact evening treatment to revive dry or frizzy hair. It’s particularly useful for people who experience tangling and pillow-induced breakage, need improved shine by morning, or prefer targeted overnight care instead of daily leave-ins. Use it if you want visible softness and easier morning styling without adding a time-consuming step to your routine.

Ingredients

Aqua / Water, Dimethicone, C13-16 Isoalkane, Niacinamide, Glycerin, Polyacrylamide, Phenoxyethanol, C13-14 Isoalkane, Laureth-7, Panthenol, Ascorbyl Glucoside, Butylene Glycol, Linalool, Hydroxycitronellal, Benzyl Salicylate, Benzyl Alcohol, Hexyl Cinnamal, Citronellol, Hydrolyzed Wheat Protein, Alpha-Isomethyl Ionone, Coumarin, Hydrolyzed Corn Protein, Hydrolyzed Soy Protein, Limonene, Iris Florentina Root Extract, Citric Acid, Ci 19140 / Yellow 5, Ci 14700 / Red 4, Parfum / Fragrance.