HG, HG, HG!!!! I have struggled with cystic acne for over 10 years (using multiple OTC products, dermatologists and prescriptions) - this is the only thing that I have ever found that really works on my skin. I discovered the product about 3 months ago. It helped to clear up the existing cysts quickly, and for the first time in over 10 years, I went 2 months without a cyst coming to full capacity. I usually get a couple on my chin or upper lip area every month. The last two months, when I could sense the same old cysts popping up, I immediately applied the serum, and they disappeared within 2 days and without ever getting horrible and painful. Also, this doesn't dry out my skin like everything else does. I can't even explain how it feels to have some confidence back regarding my skin!