Thank you for your question! Yes, it can be used externally an internally as well. There are numerous non-surgical options available for your skin, and some can be used in combination to get best outcomes, but you would need a consultation with an expert.
Some options for skin tightening in...
In addition to the measures you have already tried, PRP can be helpful, either topically or injected. Also, I would encourage patience as I have seen many patients at 3 months with these issues. They do resolve.
You said it, it was the hematoma. Blood is very inflammatory and can create adhesions and scarring. My suggestion is time, deep massage and ultrasound therapy(like a physical therapist).It will get better with time, do not(in my opinion) have anyone re-operate on that area.Once the area is s...