... and molecular weight with best quality, price Hyaluronic acid (HA) 1. Cosmetic gradeHyaluornic acid is the best natural moisturizing ... stick. 2. Food gradeOral hyaluronic acid can increase endogenetic HA by digesting and absorbing and make skin moist, bright, ... rention and lurbrication in other tissues and organs, decrease of HA will lead to arthritis, arteriosclerosis, pulse disorder and brain ...