★★★★☆
All my teen years, I had horrific acne. All kinds, tiny specks to giant cysts. All was due to poor diet. All treatments worked for a few weeks, then didn't help anymore. Witch hazel, noxema, aloe, medicated pads, oxy... So, one day I use my two brothers Lava soap they used after working on motors in the garage. That lava soap didn't cure my acne, but reduced it to half what it had been. Best - not a single scar. Photos from before are terrible, from after is skin like new. Today almost 60 yrs old, and still get compliments on baby-like smooth face skin. It didn't burn or hurt, just exfoliated r-e-a-l-l-y well.
