Kérastase Nutritive 8H Magic Night Serum
Evidence-led ingredient analysis, a transparent clean score out of 100 and cleaner, effective alternatives at three price levels.
Kérastase
Nutritive 8H Magic Night Serum
Hair · Budget: £48.00
4.6 (5,200 reviews)· across Boots, LookFantastic, Cult Beauty, Sephora UK, Amazon UK
Ingredients: AI-inferred — not yet verified
Based on the typical published formulation for Kérastase Nutritive 8H Magic Night Serum (inferred as an explicit ingredient list was not provided), this overnight leave-in serum delivers excellent conditioning, smoothing, and detangling results through Niacinamide, Panthenol, and Iris Root Extract. However, it relies on Cyclohexasiloxane (a cyclic silicone with environmental bioaccumulation concerns), ethoxylated emulsifiers with potential trace processing impurities, and a significant suite of fragrance allergens that may present concern for sensitive users.
Hazard categories
Estimated score out of 100
Formulation score is fixed across Selenssa · Community effectiveness awaiting more reports
Based on publicly available ingredients, following our methodology. Not medical advice — always check the physical label, especially for allergies. How we score →
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A highly effective aesthetic serum for dry, unruly hair, but users seeking silicone-free or low-allergen formulations may prefer cleaner alternatives.
Be cautious if
Individuals with sensitive scalps, known fragrance allergies, or concerns regarding persistent cyclic silicones.
Against your clean standard
No — contains Cyclohexasiloxane (D6) and multiple fragrance allergens alongside ethoxylated emulsifiers.
Where this score comes from
- Source
- No source record on file yet
- Source page
- —
- Retrieved
- —
- Evidence snapshot
- Not captured
Score history
No score changes have been recorded for this product yet.
Think something here is wrong? Report a correction · How we score
Does Kérastase Nutritive 8H Magic Night Serum contain parabens, sulfates or fragrance?
A straight yes or no for the ingredient groups people most often want to avoid, checked against this product's published formulation.
Free from parabens
Preservatives; the longer-chain ones (propyl, butyl) carry the endocrine questions.
Free from sulfates (sls / sles)
Strong cleansing agents that can strip a compromised barrier.
Contains silicones
Found: cyclohexasiloxane. Slip and occlusion; cyclic silicones (D4/D5/D6) are the environmentally restricted ones.
Contains fragrance / parfum
Found: parfum / fragrance. Undisclosed fragrance blends are the most common trigger for sensitised skin.
Contains essential oils
Found: linalool, limonene. Naturally derived, but among the most frequently reported contact allergens.
Contains drying alcohol
Found: phenoxyethanol. Fine in small amounts for texture; high up the list it can dehydrate.
Free from formaldehyde releasers
Preservatives that slowly release formaldehyde.
Free from chemical uv filters of concern
Restricted or debated filters with endocrine or reef-persistence questions.
Is Kérastase Nutritive 8H Magic Night Serum non-comedogenic?
This formulation contains 1 ingredient commonly associated with clogged pores — glycine soja oil / soybean oil. That does not make it unsuitable for everyone: comedogenicity depends on concentration, the rest of the formula and your own skin. If you are acne-prone, patch test or choose one of the alternatives below.
Is Kérastase Nutritive 8H Magic Night Serum safe for sensitive skin?
Usually tolerated, but patch test if your skin reacts easily.
- Contains fragrance or parfum
- Contains essential oils or common fragrance allergens
- Contains a drying alcohol
Ingredients worth knowing about: Cyclohexasiloxane, Polyacrylamide, Laureth-7, Linalool, Hydroxycitronellal, Benzyl Salicylate, Hexyl Cinnamal, Citronellol.
Kérastase Nutritive 8H Magic Night Serum full ingredients list
26 ingredients analysed, in the order Selenssa assessed them. Concentration generally falls as you move down the list.
Aqua / Water / Eau, Cyclohexasiloxane, C13-16 Isoparaffin, Glycerin, Polyacrylamide, Phenoxyethanol, C13-14 Isoparaffin, Laureth-7, Linalool, Tocopherol, Niacinamide, Pyridoxine HCl, Panthenol, Hydroxycitronellal, Benzyl Salicylate, Benzyl Alcohol, Hexyl Cinnamal, Citronellol, Coumarin, Alpha-Isomethyl Ionone, Limonene, Iris Florentina Root Extract, Glycine Soja Oil / Soybean Oil, CI 19140 / Yellow 5, CI 17200 / Red 33, Parfum / Fragrance.
The actives doing the work: Niacinamide (Strengthens strand structure and supports healthy hair texture.); Panthenol (Pro-Vitamin B5) (Deeply penetrates hair fibers to lock in moisture and protect against mechanical breakage.); Iris Florentina Root Extract & Soybean Oil (Botanical emollients that smooth dry cuticles and reduce friction overnight.).
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