the ordinary 3 bottles face serum set! peeling solution, hyaluronic acid and glycolic acid! aha 30%+bha 2% peeling solution! hyaluronic acid 2%+b5! glycolic acid 7% toning solution the ordinary hyaluronic acid (ha) can attract up to 1,000 times its weight in water. the molecular size of ha determines its depth of delivery in the skin. this formulation combines low-, medium- and high-molecular weight ha, as well as a next-generation ha crosspolymer at a combined concentration of 2% for multi-depth hydration. this system is supported with the addition of vitamin b5 which also enhances surface hydration