Does Microdermabrasion Help with Sun Spots?

Microdermabrasion is one of the most effective pigmentation treatment techniques, using abrasion to decrease melanin production, break down melanin deposits located in the skin's dermis layer and directly combat other factors that contribute to hyperpigmentation. It also reduces redness and promotes a uniform skin tone. However, suitability depends on an in-person assessment of your skin.

Microdermabrasion will help, but it will take months to see what photofacial, chemical peels or results-driven skincare can produce in weeks.  When you are receiving microdermabrasion, you are accomplishing a superficial form of exfoliation, but most patients will need a series of treatment to notice significant visible improvement. With other modalities such as photofacial, laser treatments, peels, etc., you can be more aggressive and pro-active in treating sun damage you can see in addition to damage that has not yet surfaced.  If you decide to move forward with microdermabrasion, talk to your provider about proper UV protection and topical combination therapy to expedite the process a bit.

Microdermabrasion will help with discoloration of your skin if it's combined with a chemical peel, and if you begin a skin care regimen. Suitable skin care includes: SPF30, glycolic acid, and possibly tretinoin. I'm not a big fan of hydroquinone.
IPL PhotoFacials are designed to lighten brown spots from sun-damage. You'll need around 4 treatments spaced around 3 weeks apart.
I hope this is helpful for you.