I really stress the importance of having a professional exfoliation. We offer a few different methods—whether it is a peel or microdermabrasion—that offer beneficial results depending on the clients' skin and their concerns. 
Hyperpigmentation
Blotchy Skin
Hyperpigmentation
Uneven facial complexion
Milia
Liver spots
What's the best product to use to cure hyperpigmentation due to acne? Has hydroquinone been declared safe?

There are many very effective products formulated to treat hyperpigmentation, whether the source of the problem is acne, hormones, scarring, or sun damage. Look for the words 'lightening' or 'brightening' or 'clarifying' or even 'detoxifying', when searching for a product to help with the condition. Ingredients such as fruit acids, kojic acid, hydroquinone (be careful-- it can cause allergies in some individuals), vitamin C, vitamin A, licorice, mulberry and bearberry extracts have all been shown to help speed up the rate at which hyperpigmention fades. As well, in-spa treatments such as glycolic or lactic acid peels (or a combination of) enzyme peels or microdermabrasion.