Most of the skincare experts we spoke with recommend adding a Vitamin C serum to your skincare routine slowly before building up a daily or twice-daily ...

Vitamin C serum is typically applied once or twice per day. A good rule of thumb is to cleanse, tone, apply vitamin C serum, and then moisturize. ... If the ...

While it's true vitamin C does all of these wonderful things for your skin, your vitamin C serum isn't doing you any justice – either it contains too little of ...