This kit includes, mavala scientifique, patented formula in 1958, is the first penetrating nail hardener in the world. it strengthens nails by bonding the three layers of the nail plate together. it quickly hardens soft and splitting nails and restores them to their normal and strong aspect.additionally, cuticle oil softens skin enabling it to be deta ched from the nail plate and to be rolled gently back.lastly, mavaderma is a nutritive oil which penetrates the layers of skin, thus feeding the nail’s matrix, activating blood circulation in the roots and promoting healthy growth.