{"product_id":"kerastase-blond-absolu-blonde-guard-hydrating-wonder-shield","title":"Kerastase Blond Absolu Blonde Guard Hydrating Wonder Shield","description":"\u003cp\u003eLightened and highlighted hair is structurally different from natural hair — the bleaching process that removes pigment also removes the lipid layer and proteins that protect the hair shaft from heat, UV, chlorine, humidity, and pollution. Every day without active protection is a day that compounds that vulnerability. Blonde Guard closes that gap: a leave-in wonder shield applied to towel-dried hair that forms a continuous protective barrier against the full spectrum of blonde aggressors — heat, UV rays, chlorine, salt water, and dehydration — while simultaneously delivering the intense hydration that lightened hair needs to stay vibrant, resilient, and salon-fresh for up to two months between appointments.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eBlonde Guard is built around two hero actives from the Blond Absolu line that work at different levels of the hair structure simultaneously.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eSodium Hyaluronate (Hyaluronic Acid)\u003c\/strong\u003e — Kérastase's signature active across multiple lines — works here at the level of the hair fibre itself. In lightened hair, the bleaching process creates micro-fractures and voids in the cortex that reduce the hair's ability to retain moisture and reflect light uniformly. Hyaluronic Acid fills and heals these fibre wounds from within, creating a smoother, more uniform cuticle that holds moisture more effectively and reflects light more evenly — the mechanism behind the illuminated, healthy-looking glow that distinguishes well-maintained blonde from faded blonde. Beyond the cosmetic effect, the Hyaluronic Acid complex strengthens the hair fibre, preventing the future breakage that is the end-stage of unprotected lightened hair.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eLeontopodium Alpinum (Edelweiss) Flower\/Leaf Extract\u003c\/strong\u003e — an Alpine botanical renowned for its extraordinary environmental resilience — is the source of Blonde Guard's protective shield function. Edelweiss survives extreme UV exposure at high altitude through an exceptionally dense antioxidant profile, including rare flavonoids and chlorogenic acids. In hair care, this antioxidant density provides two functions: it protects the hair fibre against the daily oxidative damage from UV radiation, pollution, and environmental aggressors that progressively dull and damage lightened hair, and it softens and recovers sensitised hair fibres — the chemically processed, structurally compromised fibres that make up lightened and highlighted hair. \u003cstrong\u003eTocopherol (Vitamin E)\u003c\/strong\u003e provides additional antioxidant reinforcement.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eGlycerin\u003c\/strong\u003e acts as the primary humectant in the formula — drawing moisture from the surrounding environment into the hair shaft and holding it there, creating the sustained hydration effect that keeps lightened hair feeling soft and pliant rather than dry and brittle through the day. \u003cstrong\u003eHydroxypropyl Guar Hydroxypropyltrimonium Chloride\u003c\/strong\u003e provides lightweight conditioning slip. \u003cstrong\u003eSalicylic Acid\u003c\/strong\u003e appears at a low concentration in the formula — acting as a gentle cuticle-clarifying agent that keeps the hair surface clean and receptive to the active complex.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe formula leaves no residue and is fully compatible with all blonde hair styling routines — blow-dry, air-dry, or hot tool styling.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eEfficacy verified through independent instrumental testing:\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003e99% protection from blonde aggressors\u003c\/strong\u003e (heat, UV rays, chlorine, salt water, dehydration) — instrumental test after application of Blonde Guard\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003e-50% of pollution particles\u003c\/strong\u003e — instrumental test after application of Blonde Guard\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003e4x shinier hair\u003c\/strong\u003e — instrumental test after application of Blonde Guard + Cicaflash Conditioner\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003e11x stronger hair\u003c\/strong\u003e — instrumental test after application of Blonde Guard + Cicaflash Conditioner\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003e+84% more hydrated hair\u003c\/strong\u003e — instrumental test after application of Blonde Guard + Cicaflash Conditioner + Huile Cicaextreme (full Blond Absolu routine)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cem\u003eMetro Vancouver note:\u003c\/em\u003e Metro Vancouver's coastal UV exposure — including overcast UV that penetrates cloud cover year-round — drives incremental oxidative colour shift on lightened hair through every season. The Edelweiss Extract's antioxidant shield and the Hyaluronic Acid's fibre-repair complex address this directly, making Blonde Guard particularly relevant for lightened hair worn outdoors in the Pacific Northwest climate regardless of season.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e All types of lightened or highlighted blonde hair — cool blonde, warm blonde, natural blonde, balayage, highlights, bleached hair. Particularly effective for hair that has been through multiple bleach or lightening services and is showing signs of vulnerability: dryness, brittleness, dullness, or colour that fades or brasses faster than it should. Use daily as a leave-in pre-styling treatment. Not recommended as a colour-correcting product — for brassiness neutralisation, pair with \u003ca href=\"https:\/\/zennkai.com\/collections\/kerastase\/products\/kerastase-blond-absolu-anti-brass-purple-shampoo\" title=\"Kerastase Blond Absolu Bain Ultra Violet Purple Shampoo 250ml | Buy in Canada | Zennkai\"\u003eBlond Absolu Bain Ultra-Violet →\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eKey Ingredients\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eSodium Hyaluronate (Hyaluronic Acid)\u003c\/strong\u003e — Fills and heals fibre micro-fractures from within; strengthens the cuticle, locks in moisture, and restores uniform light reflection for illuminated blonde\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eLeontopodium Alpinum (Edelweiss) Flower\/Leaf Extract\u003c\/strong\u003e — Alpine botanical with an exceptional antioxidant profile; protects lightened hair from UV, pollution, and environmental aggressors; softens and recovers sensitised fibres\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eGlycerin\u003c\/strong\u003e — Humectant; draws and holds moisture within the hair shaft for sustained all-day hydration\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eTocopherol (Vitamin E)\u003c\/strong\u003e — Antioxidant reinforcement; protects the hair's lipid layer from oxidative degradation\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eSalicylic Acid\u003c\/strong\u003e — Gentle cuticle-clarifying agent; keeps the hair surface clean and receptive to the active complex\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eHydroxypropyl Guar Hydroxypropyltrimonium Chloride\u003c\/strong\u003e — Lightweight cationic conditioning; provides slip and manageability in the leave-in formula\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eHOW TO USE: \u003c\/strong\u003eAfter washing and conditioning, apply generously to towel-dried hair from mid-lengths to ends. Do not rinse. Style as desired — blow-dry, air-dry, or use hot tools. For immediate protection on dry hair: apply a small amount to palms and spread evenly through lengths and ends before exposure to heat, sun, pool, or salt water. Use daily as the final step in your blonde hair care routine.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003ePair It With\u003c\/strong\u003e \u003ca href=\"https:\/\/zennkai.com\/collections\/kerastase\/products\/kerastase-blond-absolu-anti-brass-purple-shampoo\" title=\"Kerastase Blond Absolu Ultra Violet Shampoo 250ml | Buy in Canada | Zennkai\"\u003eKérastase Blond Absolu Bain Ultra-Violet Shampoo →\u003c\/a\u003e — for brassiness neutralisation and purple toning \u003ca href=\"https:\/\/zennkai.com\/collections\/kerastase\/products\/kerastase-blond-absolu-strenghtening-conditioner\" title=\"Kerastase Blond Absolu Strengthening Conditioner | Buy in Canada | Zennkai\"\u003eKérastase Blond Absolu Cicaflash Conditioner →\u003c\/a\u003e — for the 4x shine and 11x strength system results\u003c\/p\u003e","brand":"Kerastase","offers":[{"title":"190ml","offer_id":44606329159763,"sku":"3474637356620","price":67.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1476\/0902\/files\/KerastaseBlondAbsoluBlondeGuard.jpg?v=1778613103","url":"https:\/\/www.eccotique.com\/products\/kerastase-blond-absolu-blonde-guard-hydrating-wonder-shield","provider":"Eccotique ","version":"1.0","type":"link"}