Mavala Scientifique K+ is a specialized nail hardening treatment that strengthens weak, soft, and brittle nails. This penetrating solution improves the cohesion of keratin fibers in the nail plate, helping to prevent breaking and splitting while promoting natural nail growth. The product should be applied only to the tips of nails, avoiding contact with cuticles and surrounding skin. For best results, use 2-3 times per week until desired nail hardness is achieved, then reduce frequency for maintenance. The formula contains crystal resin tears from the pistachio mastic tree to support natural nail keratinization. This is neither a base coat nor nail polish, but rather a therapeutic nail treatment.