The innovative formula of Mavala Scientifique K+ hardens the nail plate thanks to a scientific ingredient that improves the cohesion of keratin fibers, an essential component of the nail, allowing the junction of the three main layers. It also contains crystalline resin tears, a gum extracted from mastic that helps in the natural process of nail keratinization, strengthening them. This penetrating aqueous solution, without being a base or polish, strengthens the nails and prevents them from breaking or peeling.