I've heard that the "don't eat chocolate/oily foods" is a myth.

The toothpaste trick works for me. I don't get acne very often, but when I do, either a little dot of toothpaste or a little dot of my Olay facial mask and it would shrink it overnight.

Everyone's skin is different, but what helped me get rid of my teen acne was washing my face every morning and night.