KÉRASTASE Nutritive Split Ends Hair Serum for Dry Hair — 1.7 fl oz Lightweight Leave-In Oil, Ultra-Sealing Repair & Shine

KÉRASTASE Nutritive Split Ends Hair Serum is a lightweight, leave-in oil treatment that seals and reduces split ends while delivering instant smoothness and shine.

This concentrated serum is formulated to add targeted nourishment to dry, brittle ends without weighing hair down. It combines plant-derived proteins and niacinamide in an ultra-sealing formula designed for daily use on mid-lengths to ends. The result is visibly smoother, shinier hair with improved manageability and a protective finish that helps minimize further damage from styling and environmental stressors.

How does this serum reduce split ends and protect hair?

The formula works by delivering concentrated nourishing agents to the most fragile part of the hair shaft — the ends. Anti-dryness polymers and plant-based proteins help smooth the cuticle and temporarily bind frayed fibers, while niacinamide supports moisture retention for a more resilient finish.

• Seals and smooths split ends with an ultra-sealing polymer complex
• Plant-based proteins reinforce and nourish the hair fiber
• Niacinamide helps lock in hydration and reduce dryness
• Lightweight oil base avoids heaviness or greasiness

When and how should I apply the KÉRASTASE split ends serum?

Apply a small dose to towel-dried or fully dry hair, concentrating on mid-lengths and ends. Five measured doses are recommended for optimal coverage; massage gently and do not rinse. The serum can be used daily or whenever hair needs targeted smoothing or added shine.

• Use on damp hair after cleansing or on dry hair between washes
• Dispense 3–5 small doses depending on hair length and thickness
• Work through ends with fingertips; no rinsing required
• Pair with Nutritive shampoo and conditioner for best results

Will this serum make my hair look greasy or heavy?

The leave-in oil is formulated to feel lightweight and absorb quickly into damaged areas rather than coating the entire strand. When used in small amounts and targeted to ends, it improves smoothness and sheen without leaving a weighed-down finish.

• Designed for targeted application to avoid root greasiness
• Quick-absorbing texture for a non-greasy shine
• Adjust dose by hair density to maintain natural movement

How does this fit into a daily haircare routine?

Use the serum as the finishing touch after cleansing and conditioning or as a quick fix between washes. It complements heat protectants and styling products by sealing ends and adding slip for easier combing and styling.

• Apply after Nutritive shampoo and conditioner for deeper results
• Use a heat protectant before styling; apply serum to ends afterward
• Include with nighttime treatments like 8H Magic Night Serum for round-the-clock care

Who is this for: KÉRASTASE Nutritive Split Ends Hair Serum is ideal for anyone with dry, brittle, or chemically/heat-stressed hair who wants a targeted, leave-in treatment to smooth ends, add shine, and reduce future breakage. It works well on all hair types prone to dryness, especially shoulder-length and longer hair where split ends are most visible. For best results, integrate it into a Nutritive routine alongside shampoo, conditioner, and complementary treatments.

Ingredients

Isododecane, Dimethicone, Dimethiconol, Tocopherol, Glyceryl Linoleate, Zea Mays Germ Oil / Corn Germ Oil, Glyceryl Oleate, Linalool, Hydroxycitronellal, Benzyl Salicylate, Benzyl Alcohol, Hexyl Cinnamal, Citronellol, Alpha-Isomethyl Ionone, Glyceryl Linolenate, Coumarin, Limonene, Parfum / Fragrance.