Why are retinoids & AHAs added to skin care products?

According to dermatologis, Dr.Nick Lowe, retinoids (derivatives of retinol, a form of vitamin A) and AHAs (alpha hydoxy acid compounds like glycolic acid and lactic acid) are included in anti-ageing skin products because they increase skin renewal rate.


'These compounds are included in anti-ageing products because they basically break down the top layer of your skin, increasing the rate at which skin renews itself'.