N-ACETYL GLUCOSAMINE (NAG)INCI: N Acetyl Glucosamine 99. 5% Molecular Weight: 221. 21 DESCRIPTION: N acetyl glucosamine is considered to be a skin identical ingredient, it is found in our skin in the spaces between the cells, and it is used to maintain skins barrier abilities and reduce dryness. NAG increases collagen production and moisture content of the skin. NAG has been shown to reduce hyperpigmentation. It is also an amino sugar that has skin exfoliating properties