{"product_id":"kerastase-resistance-serum-therapiste-repairing-leave-in-hair-serum-very-damaged-hair-heat-protection-to-450-f","title":"KÉRASTASE Resistance Serum Therapiste repairing leave-in hair serum — very damaged hair, heat protection to 450°F","description":"\u003cstrong\u003eKÉRASTASE Resistance Serum Therapiste is a leave-in repairing serum that rebuilds very damaged lengths, deeply hydrates and protects hair from heat up to 450°F.\u003c\/strong\u003e\n\n\u003cp\u003eThis lightweight, leave-in serum targets fragile, over-processed strands to restore resilience and surface smoothness. Formulated to reinforce weakened fiber, it delivers nourishing actives that improve elasticity and replace lost moisture while adding thermal protection for everyday styling. Use on towel-dried hair before blow-drying or as a finishing touch to tame flyaways and disguise split ends.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this serum repair very damaged hair?\u003c\/h3\u003e\n\u003cp\u003eThe formula supplies building blocks to help reconstruct the hair fiber and reduce the appearance of damage. Peptide and protein derivatives work together to strengthen weakened areas while hydrating agents restore softness and manageability.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGluco peptide supports fiber reinforcement and resilience.\u003c\/li\u003e\n  \u003cli\u003eWheat protein derivative improves flexibility and elasticity.\u003c\/li\u003e\n  \u003cli\u003eNative plant cells deliver lasting hydration for softer feel.\u003c\/li\u003e\n  \u003cli\u003eLightweight emollients smooth rough cuticles for improved shine.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this serum protect my hair from styling heat?\u003c\/h3\u003e\n\u003cp\u003eYes — the serum offers thermal protection up to 450°F when applied before heat styling. It forms a protective layer that helps reduce heat-driven dehydration and further weakening during blow-drying, flat ironing, or hot tools.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse 1–2 pumps on damp mid-lengths and ends prior to blow-drying.\u003c\/li\u003e\n  \u003cli\u003eCreates a heat-resistant barrier during high-temperature styling.\u003c\/li\u003e\n  \u003cli\u003eHelps maintain pliability so hair is less prone to breakage from heat.\u003c\/li\u003e\n  \u003cli\u003eCan be reapplied sparingly to dry lengths as a finishing shield.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I incorporate it into my hair routine?\u003c\/h3\u003e\n\u003cp\u003eApply a small amount to towel-dried hair focusing on weakened mid-lengths and ends, then blow-dry or style as usual. It’s compatible with conditioners and masks from the Resistance range for a comprehensive repair protocol.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eApply 1–2 pumps from mid-lengths to ends on damp hair; leave in.\u003c\/li\u003e\n  \u003cli\u003ePair with Resistance Extentioniste Conditioner and Therapiste Mask.\u003c\/li\u003e\n  \u003cli\u003eUse on dry hair for flyaways or to conceal split ends as needed.\u003c\/li\u003e\n  \u003cli\u003eSuitable for use before hot tools thanks to heat protection properties.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: KÉRASTASE Resistance Serum Therapiste is formulated for people with very damaged, weakened or over-processed hair who want to rebuild fiber strength, restore softness and protect lengths during heat styling. It suits those who regularly use hot tools, color or chemical treatments and need a leave-in treatment that combines repair, hydration and high-temperature protection without weighing hair down.\u003c\/p\u003e\n\u003ch3\u003eIngredients\u003c\/h3\u003e\n\u003cp\u003eCyclopentasiloxane, Dimethiconol, Dimethicone, Cetearyl Alcohol, Phenyl Trimethicone, Amodimethicone, Phenoxyethanol, Polyquaternium-37, Trideceth-5, Propylene Glycol Dicaprylate\/Dicaprate, Steareth-20, Cetyl Hydroxyethylcellulose, Linalool, Glycerin, 2-Oleamido-1,3-Octadecanediol, Citronellol, Trideceth-10, Ppg-1 Trideceth-6, Geraniol, Glycine, Arginine, Proline, Tyrosine, Glutamic Acid, Chlorhexidine Digluconate, Serine, Benzyl Alcohol, Hydroxypropyltrimonium Hydrolyzed Wheat Protein, Isoeugenol, Safflower Glucoside, Alpha-Isomethyl Ionone, Trehalose, Tamarindus Indica Seed Polysaccharide, Myrothamnus Flabellifolia Leaf Extract, 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. It’s suitable for color-treated hair and helps strengthen and hydrate fragile, chemically processed lengths.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How much product should I apply?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use 1–2 pumps on towel-dried mid-lengths and ends; add a little on dry hair for flyaways if needed.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"KÉRASTASE","offers":[{"title":"Default Title","offer_id":58345635053955,"sku":"B00WGBB5YG","price":70.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1023\/2696\/0515\/files\/kerastase-therapiste-front-packaging.jpg?v=1782629917","url":"https:\/\/origin-beauty.com\/products\/kerastase-resistance-serum-therapiste-repairing-leave-in-hair-serum-very-damaged-hair-heat-protection-to-450-f","provider":"Origin Beauty","version":"1.0","type":"link"}