ISDIN Si-Nails Nail Strengthening & Hardening Serum 0.08 fl oz — Fast-Absorbing, Hydrating

If your nails are thin, brittle, or prone to breaking, Si-Nails delivers a targeted formula developed in Spain to reinforce the nail plate and hydrate cuticles. The lightweight 0.08 fl oz serum combines silanediol salicylate to support silicon levels in nails, pistacia lentiscus gum to encourage keratin-related structure, and cationic hyaluronic acid to boost cuticle moisture—all in a fast-absorbing vehicle that won’t leave residue.

How quickly will I notice stronger nails?

Visible improvements are typically reported after consistent daily use; many users notice changes in texture and durability within weeks. Results depend on nail growth rate and how often the product is applied.

• Apply once daily to clean, dry nails and cuticles for best results.
• Full effect aligns with your natural nail growth cycle—continue use consistently.
• Fast-absorbing texture minimizes waiting time between applications.

What active ingredients support nail health in this serum?

Si-Nails uses a combination of targeted actives rather than a single approach: silanediol salicylate contributes silicon support, pistacia lentiscus gum helps maintain keratin structure, and cationic hyaluronic acid improves cuticle hydration. Together they work on structural and moisture aspects of fragile nails.

• Silanediol salicylate: supports silicon-related nail components.
• Pistacia lentiscus gum: promotes keratin-associated resilience.
• Cationic hyaluronic acid: enhances cuticle and surface hydration.

How do I apply Si-Nails for best results?

Use the built-in applicator to paint a thin, even layer over the nail surface and surrounding cuticle once daily. No rinsing is required—allow the serum to absorb before using hand products or nail polish.

• Start with clean, dry nails free of polish or oils.
• Apply a thin coat to each nail and adjacent cuticle; massage gently if desired.
• Reapply daily and continue through nail regeneration for sustained benefits.

Is this serum suitable for sensitive or damaged nails?

The lightweight formula is designed for delicate, weakened nails and focuses on hydration and structural support rather than aggressive chemical abrasion. If you have known sensitivities, test on one nail first or consult a dermatologist for personalized advice.

• Designed for brittle, splitting, or thin nails needing reinforcement.
• Dermatologically developed ingredients aim to be gentle and fast-absorbing.
• Patch-test recommended for those with reactive skin or nail conditions.

Who is this for: ISDIN Si-Nails is targeted at people with naturally thin nails, nails weakened by environmental stressors or routine manicures, or anyone seeking a lightweight daily treatment to improve nail firmness and cuticle hydration. The compact 0.08 fl oz size makes it convenient for trying the product, travel, or keeping in a handbag for easy daily application.

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