While actives like vitamin C, kojic acid, niacinamide, and alpha arbutin do work, they’re a double-edged sword.

The fear was that applying one after ... Vitamin C is a serum, apply the toner first. Wait in Between: Give each product a good 10-15 minutes to fully absorb and adjust to your skin's pH before ...

"Before applying any new product, especially one containing an active ingredient like Vitamin C, always perform a patch test. Apply a small amount of the serum ... and looks after each application.

The internet is ablaze after the patented formula of a “gold ... Beauty junkies have been excited to discover that the patent on a cult vitamin C serum dubbed the industry’s ‘gold standard ...

Post-inflammatory hyperpigmentation (PIH) intensifies with ... sunscreen as the final step before makeup. After cleansing, any treatment products like vitamin C serum (which actually enhances ...

Dr. Althea’s Gentle Vitamin C Serum ... after cleansing. This won’t treat the underlying cause of the pimple, but it’ll give you temporary relief. Use a hypochlorous acid spray before ...

raving that she could she could “automatically see a difference” after using it. “The White Lotus” Season 1 star, Alexandra Daddario, also shared her love of the TruSkin vitamin C serum in ...