Hyperpigmentation after breast surgery? (Photo)

An in person evaluation will be more helpful than one based on just this photo.  It looks like the darkened areas may just be flakes of dry skin, and as a first step, a trial of moisturizer would be appropriate. If that does not fix the problem, a visit to your surgeon or to a dermatologist is in order. If the skin itself is dark, a prescription for Hydroquinone may be offered. All the best. 

Hi Phantomhera.  Sorry to hear about your hyperpigmentation.  An in-person evaluation would be best, but here are some thoughts that may help.  If you have been going to a tanning bed, the stretched breast skin is more likely to tan/burn, or hyperpigment.  If your breasts are rubbing together in your bra, this can chronically irritate the skin which could lead to hyperpigmentation.  Whatever the cause, you might be a good candidate for treatment with a topical lightening product called "Hydroquinone".  Don't waste your money on over-the-counter products that contain this ingredient.  They are typically too weak to help.  See your PS or a dermatologist to get prescription-strength hydroquinone.