I am a 19 year old female with perfectly smooth skin on my body except for my legs and gluteal region. I have bumps on my legs and butt which are dark in colour, some of them are red and painful too. They turn into acne at times. This happened even when I was under isotretinoin medication for the acne on my face. I moisturize plentiful and apply
vitamin E oil too but nothing has improved my skin so far, not even exfoliation by mechanical means like scrubs. What should I do?