See A Visible Difference In Your Nails With Kerasal Nail Renewal Nighttime Nail Patches. Kerasal Nighttime Nail Renewal Patches Have A Penetrating Formula That Helps Improve The Appearance Of Nails That Are Damaged. This Nail Patch Works While You Sleep, Up To 8 Continuous Hours, Deeply Penetrating The Nail To Reduce Discoloration And Thickness, Revitalize Brittle Nails And Improve Overall Appearance. It Helps To Reduce Discoloration And Thickness, And Hydrate And Exfoliate Brittle Nails To Soften And Loosen The Damaged Layer, Revealing Smoother, Healthier-Looking Nails. Apply This Nail Repair Patch Once Daily For 6-8 Hours. In Addition To Nail Patches, Kerasal Offers A Variety Of Nail Care Products, Including Kerasal Multi-Purpose Nail Repair And Kerasal Tea Tree Oil Nail Renewal.