{"product_id":"isdin-si-nails-serum-fortalecedor-para-unas-fragiles-0-08-fl-oz-endurece-e-hidrata-cuticulas","title":"ISDIN Si‑Nails Nail Strengthening \u0026 Hardening Serum, 0.08 fl oz — strengthens brittle nails, hydrates cuticles","description":"\u003cp\u003e\u003cstrong\u003eISDIN Si-Nails is a concentrated nail serum designed to strengthen, harden and hydrate brittle nails for visibly healthier-looking results with consistent use.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFormulated in Spain, this compact 0.08 fl oz treatment combines silicon-promoting and keratin-supporting ingredients with enhanced hyaluronic acid to improve nail resilience and cuticle hydration. The lightweight, fast-absorbing formula is intended for daily application on weakened or rough nails to help restore their appearance over several weeks.\u003c\/p\u003e\n\n\u003ch3\u003eHow does ISDIN Si-Nails make nails feel stronger?\u003c\/h3\u003e\n\u003cp\u003eThe serum contains silanediol salicylate, an ingredient that supports silicon levels in the nail plate, plus pistacia lentiscus gum which encourages keratin structure. Together they work to increase nail firmness and reduce the sensation of softness or bending.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSilicon support helps reinforce nail architecture\u003c\/li\u003e\n  \u003cli\u003ePistacia lentiscus gum promotes keratin integration\u003c\/li\u003e\n  \u003cli\u003eRegular use improves resistance to splitting and bending\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this treatment help dry cuticles and surface roughness?\u003c\/h3\u003e\n\u003cp\u003eYes — the formula includes cationic hyaluronic acid, an advanced moisturizer that binds water at the nail edge to reduce dryness and rough texture. It nourishes the surrounding cuticle area without leaving a sticky residue, making nails look smoother and better defined.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCationic hyaluronic acid boosts cuticle hydration\u003c\/li\u003e\n  \u003cli\u003eReduces visible roughness on the nail surface\u003c\/li\u003e\n  \u003cli\u003eAbsorbs quickly for a non-greasy finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow soon can you expect visible improvements?\u003c\/h3\u003e\n\u003cp\u003eIndividual results vary, but consumer feedback indicates noticeable changes in nail hardness, hydration and brittleness after consistent daily application for several weeks. The small 0.08 fl oz size is concentrated, so a little serum per nail is effective over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDaily application recommended for best outcome\u003c\/li\u003e\n  \u003cli\u003eVisible improvements reported around the 4-week mark\u003c\/li\u003e\n  \u003cli\u003eSmall bottle delivers multiple applications due to concentrated formula\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I use this serum within my nail routine?\u003c\/h3\u003e\n\u003cp\u003eApply a thin layer directly to clean, dry nails and surrounding cuticles once daily or as directed. Allow the product to absorb before applying polish or other treatments; it pairs well with regular nail trimming and gentle filing to support healthy regrowth.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse on bare nails for optimal absorption\u003c\/li\u003e\n  \u003cli\u003eAllow full drying time before polish or hand creams\u003c\/li\u003e\n  \u003cli\u003eCombine with gentle nail care (filing\/trimming) for best results\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: ISDIN Si-Nails Strengthening \u0026amp; Hardening Nail Serum is suited to anyone noticing weak, brittle or rough nails who wants a targeted, cosmetic treatment to improve nail appearance and hydration. It can be used by those seeking to rebuild nail resilience after mechanical damage or seasonal dryness, and by people who prefer a scientifically formulated, non-greasy daily serum developed in Spain.\u003c\/p\u003e\n\u003ch3\u003eIngredients\u003c\/h3\u003e\n\u003cp\u003eWater, Alcohol Denat., PEG-40 Hydrogenated Castor Oil, Butylene Glycol, Acrylates Copolymer, Silanediol Salicylate, Tromethamine, Caprylic,Capric Triglyceride, Hydroxypropyltrimonium Hyaluronate, Triethanolamine, Biosaccharide Gum-2, Pistacia Lentiscus (Mastic) Gum, Propylene Glycol, Phenoxyethanol, Benzyl Alcohol, Methylparaben\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: How often should I apply ISDIN Si-Nails?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Apply a thin layer once daily to clean, dry nails and cuticles for best results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this serum suitable under nail polish?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes; allow the serum to fully absorb before applying polish to ensure proper adhesion.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ISDIN","offers":[{"title":"Default Title","offer_id":54584835637587,"sku":"B07T6J98TT","price":67.18,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1095\/4257\/2371\/files\/isdin-si-nails-frente-packaging.jpg?v=1786661498","url":"https:\/\/findsworth.co.uk\/products\/isdin-si-nails-serum-fortalecedor-para-unas-fragiles-0-08-fl-oz-endurece-e-hidrata-cuticulas","provider":"Findsworth","version":"1.0","type":"link"}