Niacinamide has been shown to improve the skin's barrier functions by increasing cell turnover and proliferation, as well as lipid production, all of which make the skin better able to retain moisture, heal itself, and combat irritants. (glowsly.com)
Pumpkin is packed with fruit enzymes and alpha hydroxy acids (AHAs), which increase cell turnover, to brighten and smooth the skin. (projectwellnessnow.com)
«Generally it is seen with products that increase cell turnover such as retinoid or hydroxy acids,» Dr. Shah said. (businessinsider.com)