Does Microdermabrasion Remove Pigmentation Marks on Black Skin?

Pigmentary changes of the skin are related to genetics, hormones, sun exposure, and inflammation. These four factors cannot be cured by microdermabrasion.

In order to effect a clinical reduction in melanocyte production of melanin, you must address the melanocytes on the deep surface of the skin. This is not acheivable with a no downtime microdermabrasion procedure.

Consider chemical peels, prescription topicals, and deeper laser depending on your skin type. I advise patients to begin Melarase creams to reduce the risk of hyperpigmentation. 

Pigmentation is a serious problem that affects many women. You must really go to an expert in cosmetic pigmentation who will explain these issues in concrete terms like this article.

Microdermabrasion does not typically help the black marks that you described. Vist you dermatologist who could determine if your dark marks is a result of pigment, blood vessles or something else. The most effective treatment would be one which takes into consideration for the cause of th dark marks.

Microdermabrasion can work for faint, superficial pigmentation but it typically takes multiple treatments.
True dermabrasion is more effective (like any ablative therapy) but can cause hypo or hyper pigmenation post-operatively for people with darker skin types and must be used with caution. This is true of other ablative therapies including some laser modalities.
I hope this helps.