Alfaparf Milano Keratin Therapy Lisse Design Keratin Refill is an Italian professional salon quality keratin refill. This light, velvety fluid helps prolong the effects of the Lisse Design service by taking care of the hair’s cosmetic appearance. The professional quality product refills hair with keratin and collagen, helping it maintain soft and smooth hair with maximum comb-ability. The premium keratin spray keeps the hair smooth, strong, soft and tangle-free. Keratin Refill, from the innovative Lisse Design Keratin Therapy line, recharges the hair with a unique keratin complex.