Can i use vitamin c everyday on face

You may have been taught that Vitamin C should be the first step in your everyday skin-care routine.

When to use vitamin c in skincare routine

But dermatologist Ana Santamarina argues that you should rethink your daily application, because certain Vitamin C formulas last longer than others. “Pure Vitamin C creates a reservoir in the skin,” she says. “It can accumulate for up to three or four days, so its daily use would not be necessary, as long as the Vitamin C has certain characteristics.”

As Santamarina notes, this cannot be done with all formulations: it has to be a product with 10 to 15% ascorbic acid at a pH of 3.5 or lower.

“This way, it can accumulate in the tissues for up to four days, which means it could be used three or four times a week,” she says. In fact, the study Topical L-Ascorbic Acid: Percutaneous Absorption Studies conducted by Dr.

Sheldon R. Pinnell found that a 15% ascorbic acid formulated at a pH of 3.2 had a half-life on the skin of about four days.

Experts recommend a serum higher than 8%, with a gold standard of around 12%, but Santamarina underscores that the pH must also be taken into acco

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