Nutritive 8H Magic Night Serum Hydrating Treatment
Nutritive 8H Magic Night Serum Hydrating Treatment
Product Description
Product overview
A luxurious overnight leave-in serum formulated with niacinamide and plant-based proteins that nourishes, hydrates, detangles, and enhances shine while you sleep. Wake up to hair that's 98% stronger with 84% less frizz.
8-Hour Overnight Nourishment
Works while you sleep for maximum absorption and hair fiber regeneration without disrupting your rest.
Texture & feel
SENSORY8-Hour Overnight Nourishment
Works while you sleep for maximum absorption and hair fiber regeneration without disrupting your rest.
+98% Stronger Hair
Clinically proven to significantly strengthen hair fibers and reduce breakage with regular use.
-84% Less Frizz
Anti-dryness polymers smooth the hair cuticle for instant frizz control that lasts all day.
Pillow Friction Protection
Creates a protective barrier against overnight friction damage from tossing and turning.
Safety & compatibility
SAFEContains multiple fragrance allergens. Consult your healthcare provider before use during pregnancy or breastfeeding.
Contains linalool, limonene, and other fragrance components that may cause irritation for sensitive individuals.
Contains dimethicone for smoothing benefits. May require clarifying shampoo occasionally to prevent build-up.
Safe for color-treated hair. Does not contain sulfates that could strip hair color.
Contains hydrolyzed wheat, corn, and soy proteins. Those with gluten sensitivity should note this for topical use.
Does not contain drying alcohols that could further damage dry or brittle hair.
Ingredient breakdown
INGREDIENTSNiacinamide (Vitamin B3)Proven
A multi-functional ingredient that locks in nutrition and strengthens the hair fiber barrier for long-lasting health and shine.
- Function: Strengthens hair fiber, locks in moisture
- Benefit: Improved hair elasticity and reduced breakage
Plant-Based Proteins (Wheat, Corn, Soy)Proven
A blend of hydrolyzed proteins from whole grains that act as a dietary supplement for your hair, feeding it essential nutrients.
- Function: Nourishes and repairs damaged hair fibers
- Contains: Fatty acids, omega compounds, and vitamins
- Benefit: Strengthens, moisturizes, and improves hair texture
GlycerinProven
A plant-derived humectant that boosts the global hydrating performance of the formula by attracting and retaining moisture.
- Function: Humectant that draws moisture to hair
- Benefit: Long-lasting hydration without weighing hair down
Iris Florentina Root Extract Key IngredientProven
A signature ingredient that regulates moisture levels and provides progressive, durable nourishment over 8 hours.
- Function: Reverses daytime loss of nutrients
- Benefit: Creates a protective beauty coat on hair fiber
Panthenol (Pro-Vitamin B5)Proven
A moisturizing and soothing ingredient that penetrates the hair shaft to improve elasticity and add shine.
- Function: Moisturizes and conditions hair
- Benefit: Improves hair manageability and softness
Ascorbyl Glucoside (Vitamin C)Promising
A stable form of Vitamin C that provides antioxidant protection for hair against environmental damage.
- Function: Antioxidant protection
- Benefit: Helps protect hair from free radical damage
30 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
Where it fits in your routine
ROUTINEApply to damp or dry hair before bedtime. No rinsing required in the morning. Use 2-3 times per week for best results.
How to use
HOW TO USEDispense Product
Apply 2-4 pumps depending on hair length and thickness. Start with less - you can always add more.
Distribute Evenly
Spread the serum in your palms and distribute through mid-lengths to ends. Avoid applying directly to roots.
Style for Sleep
Optional: Put hair in a loose braid, bun, or top knot to prevent tangling and create beach waves by morning.
Sleep & Wake Up Beautiful
Let the serum work for 8 hours overnight. No need to rinse in the morning - just style as usual.
Who is it for?
WHOPerfect for you if:
- Your hair is dry, dull, or lacks shine
- You experience frizz and flyaways
- You want an easy overnight treatment
- Your hair is color-treated or heat-damaged
- You need help with detangling
- You want professional-grade results at home
Consider alternatives if:
- You have a very sensitive scalp
- You dislike strong fragrances
- You prefer silicone-free products
- You have very fine, easily-weighed-down hair
- You're looking for a budget option
- You have wheat/gluten sensitivities (topical)
Hair type compatibility
SKIN TYPESSpecifically designed for dry hair. Provides deep overnight nourishment and restores moisture balance.
Works beautifully to maintain healthy hair and add extra shine and softness.
Safe for color-treated hair. Helps restore vibrancy and prevents dryness from chemical processing.
Helps define curls and reduce frizz. Braid hair before bed for beautiful waves in the morning.
Use sparingly (1-2 pumps max). May weigh down very fine hair if over-applied. Focus on ends only.
Apply only to mid-lengths and ends, avoiding the scalp. Formula absorbs well without adding greasiness.
Results timeline
ONGOING USEInstant Softness & Shine
Hair feels immediately softer and more manageable. Noticeable shine and reduced frizz from the very first application.
94% felt hair is shiny & silkyImproved Texture & Detangling
Hair becomes easier to comb and style. Reduced tangling and fewer flyaways throughout the day.
84% noticed less frizzStronger, Healthier Hair
Visible improvement in hair strength and elasticity. Reduced breakage and split ends. Hair looks more vibrant.
98% experienced stronger hairMaintained Nourishment
Continued use (2-3 times weekly) maintains optimal hydration levels and protects against future damage.
48% more softness reportedRatings by platform
1K+ REVIEWSPros & cons
BALANCEDPraised
- Dramatically softens and smooths hair overnight
- Non-greasy, lightweight formula
- No rinse required in the morning
- Noticeable shine improvement
- Makes detangling much easier
- Doesn't stain pillowcases
- Professional salon-quality results
- Luxurious glass bottle packaging
Criticized
- Strong fragrance not for everyone
- Expensive price point (~$55/90ml)
- Small bottle size for regular use
- May weigh down very fine hair
- Contains silicones (build-up concern)
- Fragrance allergens present
Budget-friendly alternatives (dupes)
DUPESSame parent company (L'Oreal owns Kérastase). Similar overnight nourishing concept with comparable ingredients at a fraction of the price.
Argan oil-based treatment for shine and smoothness. Different application (daytime use), but similar smoothing and hydrating benefits.
Bond-building technology for damaged hair. More repair-focused than hydrating, but excellent for strengthening and adding shine.
Unscented option for fragrance-sensitive users. Good hydrating properties but less luxurious feel than Kérastase.
Comparison with competitors
SIDE-BY-SIDEL'Oreal Elvive Extraordinary Oil
Storage & shelf life
12 MONTHS12 months after opening
Store in a cool, dry place away from direct sunlight. Keep cap tightly closed.
Glass bottle with pump dispenser. Bottle made of 20% recycled glass.
Yes - 90ml is under the 100ml liquid limit. Also available in 30ml travel size.
Frequently asked questions
FAQUse with caution. While the formula doesn't contain retinoids, salicylic acid, or other known unsafe ingredients for pregnancy, it does contain multiple fragrance allergens (linalool, limonene, etc.). Consult your healthcare provider before use during pregnancy or breastfeeding, especially if you have fragrance sensitivities.
Caution is advised. The serum contains fragrance components that are classified as potential allergens (linalool, hydroxycitronellal, benzyl salicylate, hexyl cinnamal, citronellol, limonene). If you have a sensitive scalp, do a patch test first and apply only to the lengths and ends, avoiding the scalp entirely.
Yes! This serum works well with most haircare routines. You can use it after washing with any shampoo and conditioner. However, avoid layering too many silicone-based products to prevent build-up. Use a clarifying shampoo once a week if you use multiple styling products.
This serum is specifically designed for dry hair but works excellently on normal, color-treated, and wavy/curly hair types. It's suitable for all textures from fine to thick. Those with very fine hair should use sparingly (1-2 pumps) to avoid weighing hair down.
You'll notice instant softness and shine after the first use. After 1-2 weeks of regular use (2-3 times weekly), you'll see significant improvement in frizz reduction and manageability. Full strengthening benefits are typically visible after 3-4 weeks of consistent use.
Apply this serum as the last step of your evening haircare routine, after shampooing and conditioning. Apply to damp or dry hair, focusing on mid-lengths to ends. Leave in overnight - no rinsing required in the morning. Style as usual when you wake up.
The risk is low. While the serum contains dimethicone (a silicone), the lightweight formula is designed to absorb quickly without heavy residue. However, if you use multiple silicone products, consider using a clarifying shampoo once a week to prevent any potential build-up.
The serum has a PAO (Period After Opening) of 12 months. Store in a cool, dry place away from direct sunlight and keep the cap tightly closed to maintain product efficacy. With recommended usage of 2-3 times weekly, the 90ml bottle typically lasts 2-3 months.
Verdict: The Kérastase Nutritive 8H Magic Night Serum is a luxurious, professional-grade overnight treatment that delivers on its promises. The niacinamide and plant-protein formula genuinely transforms dry, dull hair into softer, shinier locks by morning. While the strong fragrance and premium price point may not suit everyone, those who invest in this French luxury serum will enjoy salon-quality results at home. Best for those with dry to normal hair seeking a hassle-free overnight treatment that actually works.
Product Overview
Quick product notes are a great way to check if a product is free from commonly avoided ingredients by skincare enthusiasts. These preferences come about for different reasons depending on the ingredient such as personal experiences, sensitivities, health preferences & etc.
Just because a product is not free from a common preference does not mean it's a bad product! You can make a personal decision whether or not you want to use a product that contains these ingredients or not - click the labels of the preference to read more about them.
Quick Product Notes
Ever used a product that promised a certain effect but provided no results? It might not have contained any notable ingredients that could have been responsible for that promised effect. It doesn't matter what the marketing or packaging «promises» it can do, if it doesn't contain anything that can help - then the likelihood of it helping is low.
We help you identify key notable ingredients that have been shown to help with effects such as acne-fighting, brightening, UV-protection, wound healing & anti-aging to help you achieve your skincare goals smarter. Please note that different notable ingredients have varying levels of research behind them, some are extremely well proven yet some have mixed research in their efficacy.
Just because a product doesn't contain any notable ingredients doesn't mean it's bad. And a product with notable ingredients (or even many) doesn't necessarily guarantee the efficacy of the product performing these effects either. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine this.
Be smart and use this as just a starting point for you to make more informed and smarter choices and compare it with reviews to see if the product is right for you
Notable Effects & Ingredients
Why are some products great for some people and horrible for others? Well everyone has different skin types and different reactions to the same ingredients.
We've identified a range of ingredients that are commonly regarded as potentially good or bad for those with Dry, Oily/Acne-Prone or Sensitive skin.
A product that contains good or bad ingredients for your skin type doesn't always flat out make the entire product good or bad for your skin. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine your skins reaction.
One of the best ways to use this section is to troubleshoot products you've had bad experiences with in the past. Check if it contains any of the marked ingredients to point out suspect ingredients to avoid in the future!
Ingredients Related to Skin Types
Ingredient Safety Breakdown refers to the percentage % of ingredients in different risk categories as classified by EWG (Environment Working Group) if they are available. There are almost endless cosmetic ingredients and they are one of the few organisations globally that have assigned ratings to a lot of the more commonly used ingredients which is why we reference them.
EWG is seen by many to be more on the alarmist side in their assignment of health ratings resulting in rating ingredients as riskier than they actually are. We recommend using this a reference point rather than a strict guide of ingredient safety and to always do further research if into ingredients that you may find suspect.
Ingredient Safety Breakdown
Product ingredient list
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
| 1 |
Water
Solvent, Skin Conditioning
|
|
|
| 3 |
Dimethicone
Skin Conditioning, Emollient, Antifoaming Agent, Skin Protecting
|
|
|
| 1 |
Niacinamide
Skin Conditioning, Hair Conditioning, Smoothing
|
Promotes Wound Healing
Redness
Irritation
Dark Spots
Pores
|
|
| 2 |
Glycerin
Solvent, Perfuming, Fragrance, Humectant, Viscosity Decreasing Agent, Hair Conditioning, Skin Protecting, Denaturant, Skin Conditioning
|
Promotes Wound Healing
Hydrating
|
|
| 0 |
Polyacrylamide
|
|




