ISDIN Si-Nails Nail Serum

$32.00

Best For

Weak, brittle, peeling, ridged, or damaged nails needing strengthening support, hydration, and improved overall nail health.

What It Does

Helps visibly strengthen weak nails, improve nail thickness and smoothness, reduce breakage, and hydrate dry cuticles for healthier-looking nails over time.

Why It Works

Formulated with cationic hyaluronic acid, Pistacia lentiscus gum, organic silicon, and strengthening nail-supporting ingredients to help boost keratin production, improve nail resilience, support healthy nail growth, and maintain long-lasting hydration without leaving a greasy or visible residue. The easy-to-use serum pen delivers targeted application with visible results in as little as 14 days.

How to Use

Apply daily to clean, dry, unpolished nails. Brush the serum over the nail surface, edges, cuticles, and underneath the nail if possible. Allow the product to fully absorb and avoid washing hands immediately after application for best results.

Shop recommended pairings below.

Best For

Weak, brittle, peeling, ridged, or damaged nails needing strengthening support, hydration, and improved overall nail health.

What It Does

Helps visibly strengthen weak nails, improve nail thickness and smoothness, reduce breakage, and hydrate dry cuticles for healthier-looking nails over time.

Why It Works

Formulated with cationic hyaluronic acid, Pistacia lentiscus gum, organic silicon, and strengthening nail-supporting ingredients to help boost keratin production, improve nail resilience, support healthy nail growth, and maintain long-lasting hydration without leaving a greasy or visible residue. The easy-to-use serum pen delivers targeted application with visible results in as little as 14 days.

How to Use

Apply daily to clean, dry, unpolished nails. Brush the serum over the nail surface, edges, cuticles, and underneath the nail if possible. Allow the product to fully absorb and avoid washing hands immediately after application for best results.

Shop recommended pairings below.

For best results, pair with:

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Ingredients: Water, 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.