I would say no to your question because it is my thought that there are only 4 non-perscription treatments that are effective with trating psorisis.
1.Pyrithion Zinc-Main Ingredient in Head and Shoulders
2.Coal Tar- most popular psorisis treatment
3.Hydrocortisone-Main ingredient in most bug bite creams
4.Salysilic acid-found in facial astringents
Vitamin C is a weak antioxadant. I cannot see this as being effective in treating skin disorders. What form is the vitamin C in? i.e. rose hips, synthetic ascorbic acid or something else? This make a difference.
Vitamin E is great for healing skin because of its ability to nourise with moisture and prevent scaring. I cannot see using it to reverse psorisis though.
I know nothing about that detox so I will refrain from commenting about that.