What the Best Chemical Peel I Can Use for my Dark Purple Scars Left by Boils? (photo)

Over the years i have had many boils due to being over weight and probably other reason which i do not know about. I have lost some weight and now get less boils. they have always primarily been on my buttocks, inner thighs, and on the side of my legs. they are very embarrasing and hold me back from feeling free. I want to know before the scars get older what peels (phenol, tca, glycolic) and percentage i can use to help reduce and diminish these scars. They are dark purple. Many are Spotting.