Definition: Known as niacin, niacinamide or nicotinic acid. It has the power to reduce trans-epidermal water loss as well as preserve the health of the barrier function. More than that, it also assists in the DNA repair of the skin by increasing the protein synthesis and stimulating the ceramide synthesis.
Super well tolerated by sensitive skin, this is an excellent ingredient for those having an impaired barrier function.
High concentrations should not be used on a compromised skin barrier
Claudia Tua Clark