Face is red, itchy, swollen and leathery after using acne treatment?

It sounds like a bad allergic reaction, they usually have numbers on the products that you can call. I recommend you try calling them, they can probably help you out and give you your money back as well. To get rid of the itchiness use hydrocortisone cream and maybe an aloe vera lotion. And to reduce the pain take some ibuprofen but you should definitely consult a dermatologist if the symptoms are still persisting.