What are the differences between vitamin C ester and vitamin C, and how do they compare in terms of effectiveness for skincare?

Vitamin C ester is a more stable form of vitamin C compared to traditional vitamin C. It is believed to penetrate the skin better and provide longer-lasting benefits. In terms of effectiveness for skincare, vitamin C ester is often considered more gentle and less likely to cause irritation, making it suitable for sensitive skin. However, traditional vitamin C is still widely used and can be effective in brightening the skin and reducing signs of aging. Ultimately, the choice between the two forms of vitamin C depends on individual skin needs and preferences.