Just as its name suggests, this product is based on the vitamin Niacin. Its delivery form is a patented molecule known as Pro-Niacin, which penetrates the skin and delivers Niacin to the skin cells. This enables the skin to protect and heal itself from sun damage and aging and results in healthier, more beautiful looking skin. Pro-Niacin is the basis of every product in the line-from the cleansers to skin strengthening complex to the sunscreen. It is a great adjunct to our laser treatments as it promotes DNA repair and healing, and the beauty of Nia 24 is that it is so gentle that even the most sensitive skin types can use it daily!