{"product_id":"loreal-professionnel-serioxyl-advanced-holiday-duo-2026","title":"L'Oréal Professionnel Serioxyl Advanced Holiday Duo 2026 – Densifying Shampoo 500 ml \u0026 Denser Hair Serum 90 ml","description":"\u003cp\u003e\u003cstrong\u003eThe Serioxyl Advanced density routine in one gift box — the salon-size densifying shampoo and the professional denser hair serum.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSerioxyl Advanced is L'Oréal Professionnel's answer to thinning hair, and it works as a pair. The 500 ml shampoo carries magnesium to purify the scalp and give the hair body from the root. The 90 ml serum is the active step: stemoxydine 5% plus resveratrol, applied to the scalp daily, with the brand quoting visibly denser-looking hair from six weeks.\u003c\/p\u003e","brand":"L'Oréal Professionnel","offers":[{"title":"Default Title","offer_id":71246792884477,"sku":"502584","price":55.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0309\/6539\/9685\/files\/loreal-coffret-des-fetes-serioxyl-advanced-4579427.png?v=1788534687","url":"https:\/\/procareoutlet.com\/products\/loreal-professionnel-serioxyl-advanced-holiday-duo-2026","provider":"ProHair","version":"1.0","type":"link"}