Since exfoliation became an essential step in our skincare routine, we've turned to alpha-hydroxy acids. Among the 5 AHAs, glycolic acid has been exceptionally helpful for gentle skin exfoliation. It promotes cell turnover, brightens complexion, fades dark spots and scars, refined pores and reduces the look of wrinkles. Here's 10 of the best glycolic acid toners for dry, oily, sensitive and acne prone skin.