Dark spots all over my neck and lower face from laser hair removal. The marks are still there even after three months (Photo)

Hyperpigmentation can be improved with a combination of lasers, Aerolase, microneedling/prp, skin lightening, peels, and skin care. Sun protection is essential. I recommend getting a formal evaluation with a cosmetic dermatologist. Best, Dr. Emer

The hyper pigmentation does fade in most situations. Stop laser treatments. Avoid sun and use a sunblock daily. There are medical grade skin lightening creams that may help.

Thank you for your question. It is very important to seek treatment from a board-certified specialist. You can treat hyperpigmentation thru a variety of treatments including professional bleaching cream, microneedling, PRP and chemical peels. For more information, I recommend getting a in person consultation from a board-certified dermatologist. 

I am sorry you have had an unpleasant outcome with your treatment. From your picture your skin is type 4 or 5 which means you need extra attention when using laser light. At this point you should not do any more sessions. I hope you had the treatment performed in a medical setting with an experienced physician. In order to help those spots to fade I recommend you use a prescription skin lightner, avoid sun exposure, and wear full sun block when outdoors. It might take many months for your skin to improve.
Good luck.