21. Alpha-hydroxy acids help the skin attract and retain moisture. 22. Alpha hydroxy acid peels ( using 50 % concentrations or greater ) may remove skin discolorations. 23. As Elgart points out, alpha-hydroxy acids do work. 24. Notably, approximately 40 % of the acids derived from lanolin are alpha hydroxy acids ( AHAs ). 25. Beta-hydroxy acids are considered even more effective and are contained in Oil of Olay's Age Defying Series. 26. Retin-A will continue as an acne cream; Renova becomes available later this month .-- ALPHA HYDROXY ACIDS 27. The white-coloured moisturiser contains alpha hydroxy acids . 28. "' Pantoic acid "'is an alpha hydroxy acid which is a component of some biologically active compounds. 29. Salicylic acid is not beta hydroxy acid . 30. Hydroquinone is sometimes combined with alpha hydroxy acids that exfoliate the skin to quicken the lightening process.
