The cosmetic line of BiRetix carries all the benefits of a vitamin A acid -containing acne treatment without aggressive side effects (no increased photosensitivity no treatment breaks in the summer). Vitamin A acid is an important part of many metabolic processes, such as the growth of skin cells. An adequate supply of skin cells with vitamin A acid promotes a regulated cell division, so that pores open and re- clogging is prevented. Thus BiRetix acts sebum-regulating, antibacterial and antioxidant. In addition BiRetix contains nourishing ingredients which soothe and regenerate the skin.