Hello and thank you for your query. I am unsure of the exact treatment you are referring to. Microdermabrasion can be effective in skin exfoliation treatment of mild pigmentation. Often pigmentation will require a more intense treatment and one that does not cause post inflammatory hyperpigmentation. Depending on the severity of the pigmentation and whether it is hormonal or environmental related, a series of treatment specific peels is usually the recommended treatment choice. Some peels can be combined with laser treatments to produce more effective results. The treatment of pigmentation is an ongoing, life- long commitment! That means that avoiding sun exposure and wearing sunscreen should be a daily routine for you. For further information on treatments available for pigmentation, please see our website.