I’m also curious what sort of Vit C. Ascorbic? The consensus has varied eventually; 1 human being suggests ascorbic could be the worst, Other people say ascorbic is okay, Some others say Vit C can't be absorbed by skin to increase collagen but may have a brightening effect. Even Hailey https://7figurebm.com/how-to-make-vitamin-c-serum-from-orange-peel/