BENEFITS By using SERUM No3, starting 2 times a week for 4 weeks, your hair will visually improve its condition. You will feel them more: FULL-BODIED, SOFT TO THE TOUCH, BRIGHT, FLUPPED, REGENERATED. Use it in combination with the EQUALIZER and MINERAL LEAVE IN from the serum line. CHARACTERISTICS SERUM No.3 regenerates hair by repairing, fortifying and protecting it thanks to the exclusive patented HSP3 Complex formula , the result of years of studies at the OP|COSMETICS laboratories and experience in hair reconstruction. The Repair Serum n 3 is a cream serum to be used at home as an extra intensive treatment for damaged hair before shampooing to regenerate the deep hair fibre. The REGENERATING SYSTEM of the SERUM line with the products SERUM n 3, EQUALIZER and MINERAL, helps you to bring the state of your hair back over time as close as possible to natural hair, as you have never had it since you started coloring and lighten your hair.