{"product_id":"kerastase-chronologiste-overnight-youth-serum-90ml-overnight-hydrating-anti-aging-hair-serum-with-hyaluronic-acid-abyssine","title":"KÉRASTASE Chronologiste Overnight Youth Serum 90ml — Overnight Hydrating Anti-Aging Hair Serum with Hyaluronic Acid \u0026 Abyssine","description":"\u003cstrong\u003eKÉRASTASE Chronologiste Overnight Youth Serum is a lightweight, leave-in night treatment that hydrates, smooths and restores shine while you sleep.\u003c\/strong\u003e\n\n\u003cp\u003eDesigned for hair affected by dryness, dullness, frizz and weakened fibers, this evening serum works overnight to replenish moisture and improve the look and feel of aging hair. The formula combines Pro-Xylane and Abyssine with hyaluronic acid to target hydration and fiber resilience, while a signature Chronologiste fragrance turns the application into a sensorial ritual. Use it on damp or dry hair before bed to wake up with softer, more manageable strands.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this overnight serum improve hair by morning?\u003c\/h3\u003e\n\u003cp\u003eThe serum delivers concentrated hydration and a cuticle-smoothing layer that helps reduce surface friction and frizz while you rest. Lightweight molecules penetrate the hair fiber to plump and reinforce weakened areas, giving hair a visibly smoother, shinier finish after one use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHyaluronic acid attracts and retains moisture within the fiber.\u003c\/li\u003e\n  \u003cli\u003ePro-Xylane helps restore tensile strength and fullness.\u003c\/li\u003e\n  \u003cli\u003eAbyssine (Ochrophyta Algae derivative) supports surface soothing and comfort.\u003c\/li\u003e\n  \u003cli\u003eLeave-in texture seals the cuticle for enhanced shine and reduced frizz.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this serum weigh my hair down or leave residue?\u003c\/h3\u003e\n\u003cp\u003eThe Chronologiste Overnight Youth Serum is formulated to be lightweight and non-greasy so it conditions without flattening roots or leaving heavy buildup. A small, even application spreads easily and absorbs overnight, preserving natural movement and volume.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFine, fluid texture designed for leave-in use.\u003c\/li\u003e\n  \u003cli\u003eAbsorbs into mid-lengths and ends rather than coating roots.\u003c\/li\u003e\n  \u003cli\u003eSuitable for use on damp or dry hair without rinsing.\u003c\/li\u003e\n  \u003cli\u003eFragrance leaves a subtle, luxurious scent rather than an overpowering residue.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I use it as part of my evening routine?\u003c\/h3\u003e\n\u003cp\u003eApply a small dose to dry or towel-dried hair before bed, focusing on mid-lengths and ends where damage and dryness are most common. Style as usual or braid loosely for extra protection; no rinsing required—simply sleep and let the active ingredients work.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDispense a pea-to-walnut sized amount depending on hair length and thickness.\u003c\/li\u003e\n  \u003cli\u003eDistribute evenly with fingers or a wide-tooth comb.\u003c\/li\u003e\n  \u003cli\u003eLeave in overnight; shampoo or style normally in the morning if desired.\u003c\/li\u003e\n  \u003cli\u003eUse regularly for cumulative improvement in texture and shine.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat results can I expect and when?\u003c\/h3\u003e\n\u003cp\u003eMany users notice immediate improvements in smoothness, shine and manageability after the first application. Repeated use targets fiber strength and overall radiance: documented measures from the Chronologiste program report notable reductions in frizz and enhanced hair resilience after routine application.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eImmediate: softer feel, smoother surface and enhanced shine.\u003c\/li\u003e\n  \u003cli\u003eShort-term: diminished frizz and easier styling within a few uses.\u003c\/li\u003e\n  \u003cli\u003eLonger-term: improved fiber strength and vitality with ongoing use.\u003c\/li\u003e\n  \u003cli\u003eDelivers a fragrant sensory experience alongside visible benefits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: KÉRASTASE Chronologiste Overnight Youth Serum is intended for those noticing signs of aging in their hair—dryness, diminished shine, frizz and weakened strands. It suits all hair types seeking overnight hydration and smoother texture, particularly color-treated, chemically processed or naturally aging hair that needs a restorative, non-greasy leave-in treatment.\u003c\/p\u003e\n\u003ch3\u003eIngredients\u003c\/h3\u003e\n\u003cp\u003eAQUA \/ WATER \/ EAU • DIMETHICONE • GLYCERIN • ISOPROPYL MYRISTATE • PHENOXYETHANOL • POLYACRYLAMIDE • C13-14 ISOALKANE • LAURETH-7 • BENZYL SALICYLATE • HEXYL CINNAMAL • BENZYL ALCOHOL • LINALOOL • TETRAMETHYL ACETYLOCTAHYDRONAPHTHALENES • CARVONE • CITRUS AURANTIUM PEEL OIL • LIMONENE • POGOSTEMON CABLIN OIL • CITRONELLOL • LINALYL ACETATE • GERANIOL • HYDROXYCITRONELLAL • MACROCYSTIS PYRIFERA EXTRACT \/ KELP EXTRACT • HYDROXYPROPYL TETRAHYDROPYRANTRIOL • BENZALDEHYDE • GERANYL ACETATE • COUMARIN • CITRIC ACID • TRIMETHYLBENZENEPROPANOL • ROSE KETONES • PROPYLENE GLYCOL • BETA-CARYOPHYLLENE • POTASSIUM SORBATE • SODIUM BENZOATE • PARFUM \/ FRAGRANCE\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this serum on color-treated hair?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The lightweight leave-in formula is suitable for color-treated hair and helps add moisture and shine without stripping color.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I apply the Overnight Youth Serum?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Apply nightly or as needed before bed; regular use yields the best improvements in smoothness and strength.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"KÉRASTASE","offers":[{"title":"Default Title","offer_id":57794420834636,"sku":"B0GJDXD9S2","price":77.81,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1005\/5912\/6860\/files\/kerastase-chronologiste-front-jar_298282bf-d48b-4f79-b8e7-365cb38ebf00.jpg?v=1781481444","url":"https:\/\/belvera.co.uk\/products\/kerastase-chronologiste-overnight-youth-serum-90ml-overnight-hydrating-anti-aging-hair-serum-with-hyaluronic-acid-abyssine","provider":"Belvera | British Beauty, Skin Care \u0026 Personal Wellness","version":"1.0","type":"link"}