As you are all aware, The Ordinary Salicylic Acid has been discontinued for over two years now. Apparently, it was a super-strong formulation and a lot of ...

When and how often should niacinamide be applied? As it's well tolerated by most people, niacinamide can be used twice a day everyday. It works at any time of ...

Niacinamide pH is a more neutral 6 to 7, which means the two are not normally compatible due to their different pH levels. ... Since Magnesium Ascorbyl ...