The hype on alpha hydroxies is that they do everything from exfoliating your skin and stimulating new cell production, thereby smoothing the surface, to firming up the skin by boosting collagen production and increasing moisture absorption. Is it all true? Beats me. Because these acids are naturally derived (from fruit, milk, etc.) rather than lab-produced, they don't fall under the purview of the FDA, so claims don't require the same level of proof. That said, I use products with alpha (and beta) hydroxies, as does my fiancÃ©e, and we've had positive experiences. Not all formulations are identical, however, so the mere presence of some form and concentration of alpha hydroxy does not guarantee anything. Also, skin types vary widely, so a product that works wonders for me might wreak havoc with your skin. It wll probably take some experimentation to find the product with the best balance of active ingredients for your complexion.