I’m also curious what type of Vit C. Ascorbic? The consensus has varied after a while; one particular particular person says ascorbic would be the worst, others say ascorbic is fine, others say Vit C can't be absorbed by pores and skin to raise collagen but may have a brightening https://7figurebm.com/how-to-make-vitamin-c-serum-from-orange-peel/