Isdin Si-Nails Nail Hardener is a cosmetic product based on cationic hyaluronic acid, recommended for moisturizing nails. It protects and improves their appearance. This varnish stimulates growth and increases their strength so that they do not become brittle and break. This gel improves their remineralization and restructuring by increasing the quantity and quality of silicon and keratin, the main components of nails. This polish gives nails and cuticles a natural shine and strength. Leaves an invisible finish and is easy to apply. Results are visible after 14 days.
This cosmetic procedure has been dermatologically tested.






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