I have had reactive hormonal acne since I started puberty, and I am now nearing my 30s! I purchased this after the moonlight catalyst was out of stock on another site and was alarmed in the best way at how well this serum worked! It clears and calms quickly without my skin drying as I find with other acne products. Generally if I blink wrong I get a pimple (wear my foundation for too long during a long day at work.. pimple, have office cookie someone brought in.. pimple, I stress out... pimple, that time of the month.. angry pimples, etc.) but this works by calming my reactive, angry skin and has even allowed me to start using other products to help with other concerns as I near my big 30. Try it, and I hope you will be as pleased as I am with this product.