Hi,
I am now a fan of "green" products as cosmetic applications. The best mask I've ever have done is a sour creme mask. Its way cheap and it works better than any other mask I've bought over the counter. I buy sour creme made with a live culture of enzymes (pretty much organic food stores would sell this) and simply place a nice layer (maybe 1-2 tablespoons of this stuff) on my fact at night. Actually this is what I do:
1) Place a warm/hot washcloth on my face to open up the pores
2) Smother 1-2 tablespoons of sour creme on face
3) Wait 10 minutes
4) Remove by placing warm/hot washcloth on face, then rub off
The enzymes from the culture acts as one of the best gentle and very effective facial peels. Your skin will feel so soft for more than a day or two and its good at taming acne. I am black, so I suffer from hyperpigmentation and this is more effective than any over-the-counter bleaching creme I've ever used and it works quicker too. It helps even out skintone.
For intense treatment, sleep with the sour creme on overnight, each night, for a week. The only downside to this is it can smell, so don't do it the morning of our you will smell like sour milk outside in the elements. There are tons of sour creme mask recipies on the internet which probably have other natural ingredients which helps tone done the smell.