Thank you for sharing this helpful information! I think it's essential to know this, especially if someone has some vitamin deficiency, so they know what to eat more. For example, when I see that my skin has its "bad" days, I try to eat more food with vitamins that are good for it, like green leafy vegetables, fish, and grains. Sometimes I take https://www.thorne.com/products/dp/collagen-plus to maintain it healthy even more. I rarely eat junky food, so I don't have any problems with pimples.