Biotrin hard & strong nails topical emulsion \ \ moisturizing, hardening and protective emulsion for daily care, for brittle nails. \ \ contains: \ \ cystine, biotin, ceramides, phospholipids & glycosphingolipids, cholesterol, d-panthenol, lecithin, omega-fatty acids and vitamins A & E. \ \ ensures good nail health. \ \ contributes to the formation of hard keratin, effectively addressing the problems of thin and brittle nails. \ \ comes with a special file, with 3 different surfaces, which is used to improve the absorption of the emulsion and the aesthetic appearance of the nails. \ \ thanks to its oily external phase, it is extremely resistant to contact with water. \ \ use of the emulsion: \ \ daily, morning and evening on clean nails, gently massaging until completely absorbed. \ \ file use: \ \ once per week in combination with the emulsion. \ \ 20 ml package with special file. \