Extending Topcoat gives a super shiny, flexible finish that holds polish on natural nails for 7-10 days chip free! Using sulfur amino acids that bond with the polish and the base coat, Extending Topcoat gives strength and chipping prevention to the polish. The unique blend of polyurethane and silicone gives flexibility, shine, and hydration to the nail along with the polish, which allows the polish to move with the nail so as to not chip or dent due to natural nail growth.