C-Quence Serum 4 PLUS is the new level of the Youth EssentiA Step-Up System. Packed with powerful peptides, vitamins and antioxidants, this advanced serum improves the integrity of the skin and protects against prematurely ageing and environmental & photo damage. Environ Youth EssentiA Vita-Peptide C-Quence Serum 4 PLUS contains the highest concentration of vitamins A and C. It is specifically intended for people with severe photo-damaged skin and who wish to achieve even better results. This must be used with antioxidant defence creme. Due to the nature of ingredients new customers must complete a consultation form prior to your product being dispatched. If you are a new user we will email you a consultation form to fill out prior to dispatch.