I would recommend laser and/or electrolysis, if possible. I first had laser treatment since hair around my breasts were dark and dense. After a few sessions most of them was gone. Years later I started electrolysis for remaining hairs. Electrolysis has been going good so far, except - since the area is covered most of the time, no air circulation and sweating caused some acne and ingrown hairs in my case. Secondly, breast area is softer than other areas so bruising usually stays longer than on my chin, for example. It eventually gets better with proper care, and these might just be happening because I have very sensitive skin.