Great for: Dull skin that's prone to visible dark spots, dark circles, etc.

Promising review: "I just started using this, but I'm already blown away by the results. I had stubborn acne and texture issues that did not change for weeks — months for some places, years for others. No product I added or removed from my routine made a bit of difference. Enter Mad Hippie. In just DAYS, my skin has improved tremendously. My forehead (which was my trouble spot) is clear! I am mystified. Stubborn scars on my cheeks are lightening, as well." —T. Graves

Get it from Amazon for $27.19.