Hello, you can get all of them. Choose to suit the style of the recipe. For example, if the formula is cream-oil, you can use
Perfect-C which is soluble in oil, in case the formula is water-based or water gel, choose the one that is soluble directly. which has many Let's explore the differences, limitations, and how to use each one. For water formulations, the easiest is
Ethyl Ascorbic acid No need to adjust pH and you don't have to worry about stability.