ISDIN Si-Nails Strengthening Nail Serum
- Silanediol salicylate for silicon
- Pistacia lentiscus gum for keratin
- Cationic hyaluronic acid for cuticles
- Brittle or weak nails
- Developed in Spain
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A targeted serum that strengthens brittle, weak nails and moisturizes cuticles. The tube is tiny and no usage frequency is listed, so check the directions on the pack.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B07T6J98TTCategory: Nail Strengtheners
Overview
Brittle nails after gel manicures or frequent hand washing are what ISDIN Si-Nails is made for, a fast-absorbing strengthening serum. It pairs silicon and keratin support with hyaluronic acid for the cuticles.
Stronger, less rough nails without wearing a hardening polish is the reason to try it. The amount is small and the listing gives no routine, so results depend on steady use.
Who it's for
People with weak nails from gel removal, dry air or water exposure benefit most. Those with healthy nails have little need for a strengthening serum.
Pros and cons
- Targets brittle nails
- Dermatologist recommended brand
- Very small size
- Usage frequency not listed
- Results take time
Performance notes
The serum soaks into the nail plate and cuticle, supplying silicon and keratin support while hyaluronic acid holds moisture. Consistent application over weeks matters more than any single use.
Specifications
| Brand | Isdin |
|---|---|
| Item Form | Serum |
| Product type | Nail strengthening serum |
| Key ingredients | Silanediol salicylate, pistacia lentiscus gum, cationic hyaluronic acid |
| Target concern | Brittle or weak nails |
| Country of origin | Spain |
Frequently asked questions
Is ISDIN Si-Nails a nail polish?
No. It is a strengthening serum treatment, not a color polish or topcoat.
Does ISDIN Si-Nails help cuticles?
Yes. Cationic hyaluronic acid promotes cuticle moisturization.
What does ISDIN Si-Nails contain?
Silanediol salicylate, pistacia lentiscus gum and cationic hyaluronic acid.