Can I Use Vitamin C Twice Per Day for Optimal Skin Health?
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5 min read
Pharmacokinetic studies indicate that oral doses of ascorbic acid above 1 gram per day see absorption rates fall to less than 50%. For topical application, however, the question of frequency is different: many dermatologists and skincare experts agree that you can use vitamin C twice per day, provided your skin tolerates it well. A double-application strategy can maximize its powerful antioxidant and reparative benefits for enhanced skin health.
