Use vitamin C in the morning and retinol at night to avoid skin irritation. Vitamin C protects against photodamage and should be applied before applying sunscreen. Retinol is best used at night due to ...

When it comes to skincare products that work, antioxidant serums containing vitamin C reign supreme. But it’s crucial to know how and when to use vitamin C serum to reap the many benefits of vitamin C ...

There's been no better time to be really, really into your skincare routine, with more active ingredients than ever to choose from. (Hyaluronic acid basically being a household term at this point, tbh ...

Sarah Bradley is a writer with six years of experience creating personal essays, reported features, and content related to health and parenting topics. Susan Bard, MD, is a board-certified general and ...