Pupa Milano Keratin Strengthening Gel & Multi Nail Care 7 in 1 - Keratin Strengthening Gel Visibly strengthens and repairs damaged nails by stimulating the natural formation of keratin. Low risk of allergies. Multi Nail Care 7 in 1 A real treatment dedicated to nails. A single gesture is enough to enjoy the 7 magnificent effects: it is hardening, restructuring, moisturizing, protective, revitalizing, increases the hold of the enamel and increases the brilliance of the nails. The maxi applier with 440 rounded-cut bristles guarantees optimal pick-up and release.