Isdinceutics SI Nails


Fast-absorbing serum nail strengthener

ISDIN Si-Nails is an innovative nail growth formula that has been clinically proven to strengthen brittle nails by increasing thickness, density, and durability of the nail and cuticle. Visible results in just 14 days.

Size: 2.5 mL

Main ingredients: Silanediol salicylate, pistacia lentiscus gum, cationic hyaluronic acid

Good to know: Fragrance free, fast-absorbing, invisible finish

Awards: Realsimple Road Test

Skin concern: Brittle nails

SI-NAILS strengthens your nails with an invisible finish that is easy to apply. Thanks to its combination of ingredients, it supplies your nails with more keratin, more hydration, more silicon and more protection. Product highlights: 

  • Promotes nail growth, increases their resilience, helping to prevent breakage.
  • Supports remineralization and restructuring of nails by increasing the quantity and quality of silicon and keratin.
  • Invisible, easy-to-apply finish that restores the natural appearance of nails and cuticles.


All orders are shipped within 48 hours Monday - Friday 8am - 5pm. Confirmation and tracking number will be sent via email after placing your order. The rate charged for the shipping of your order is based on the weight of your products, and your location. Before the final checkout page you will be shown what the cost of shipping will be.
All discounted Sale items are final sale. If you are not entirely satisfied with your purchase, we're here to help. In the rare event that your product arrives damaged or if you are not satisfied with your order, please send an email ASAP to and include your order confirmation number. 

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