I've gone through two bottles of this and will definitely keep it in my skincare rotation for the foreseeable future. I use lots of masks, but I don't see visible results with most. With this one, I do. It was my first introduction to AHAs & BHAs (labeled as such), and it continues to be one of the best options for incorporating them into a skincare routine, in my opinion. Also, of course, the red color makes it a fun mask to use.
It's potent. The directions are extremely clear about how often and how long this product should be used, but even following that too a T, I would advise starting off using it 1-2 times a week for 4-6 minutes rather than a full 10 minutes. Because it's so strong, I use really gentle, nourishing products afterwards (usually just a simple, gentle moisturizer). Any active ingredients will cause irritation and stinging.