Saxena V, Yadav K. Glycolic Acid, Lactic Acid, Mandelic Acid, Salicylic Acid, Citric Acid, Gluconolactone: Skin Exfoliators in Combination Therapy of Acne Vulgaris. International Journal of Research in Engineering, Science and Management. 2020 Oct 16;3(10):54-5.
Jennings MB, Alfieri D, Ward K, Lesczczynski C. Comparison of salicylic acid and urea versus ammonium lactate for the treatment of foot xerosis. A randomized, double-blind, clinical study. Journal of the American Podiatric Medical Association. 1998 Jul 1;88(7):332-6.
Johnson AW. Hydroxyacids. InSkin Moisturization 2002 Feb 26 (pp. 347-376). CRC Press.