Londontown's Fortifying Ridge Filler is a specialized nail primer designed to create a perfectly smooth surface for polish application. This dual-action formula acts as both a ridge-filler and a nourishing base coat, infused with Biotin and a proprietary Florium Complex. A single coat effectively conceals bumps and unevenness for a flawless, matte finish, while a second coat addresses deeper imperfections. It can be worn alone for a natural, perfected look or as a durable base to extend the life of your manicure and prevent chipping. The treatment strengthens and conditions brittle nails with botanical extracts, helping to prevent breakage and staining.