Benefits/Features The first super-repairing protocol for hair and scalp from dercos, the #1 hair brand recommended by dermatologists worldwide. This protocol, enhanced with pro-collagen & citric acid, acts on the resilience of hair weakened by collagen loss 17*. Strengthens the deeper internal structure of the hair and prevents hair loss due to breakage. Repairs 5 years of damage with the 1st use.*** *in vitro test on ingredients. ***laboratory test after applying the entire routine. Proven effectiveness: 10 times stronger hair. ** +29% volume. *** +99% reinforcement of the internal structure of the hair. **** Visibly denser hair mass. ***** suitable for all hair types. Dermatologically tested. *in vitro test on ingredients. **laboratory test after application of pre-shampoo, shampoo and conditioner