Apply 2-3 drops at night as a booster on cleansed skin, allow 1-2 minutes for absorption. Follow with hydration serum if desired. Finish with moisturizer.
Important Note: For those who are new to 10% Glycolic Booster, they should use the serum alternate nights for 2 weeks before applying nightly after two weeks. Daily use of sunscreen recommended. Use caution when combining with other exfoliating products as this may increase sensitivity.