Redken cerafill defy aminexil treatment is ideal for normal to thin hair that is showing early signs of thinning featuring a nozzle for easy application the fast absorbing treatment helps you to prevent premature hair loss and maintain the density of thinning hair whilst thickening your locks sa directions for use apply daily or at least 3 times per week spray directly 12 times on to clean towel dried scalp and massage in do not rinse style as usual