How do I get rid of grid marks on face from laser treatment? (Photo)

I'm really sorry that you had this problem with the IPL treatment. Anyone familiar with my Realself answers over the years knows well that I am not much of a fan of current light and energy based treatments, having found these relatively expensive treatments at best to offer inconsistent, variable, and subtle results, and, on the other side, to give rise to problems, such as the one you are currently experiencing. 

I would strongly urge you to schedule an appointment with a board certified aesthetic dermatologist who would be able to recommend prescription strength medications for home use and appropriate in-office treatments to help blend the irregular, grid pattern blotches. Exercise caution in considering further light treatments at this point. In office treatments may include a series of superficial peels and/or the use of medical microneedling to help blend the overall tone and texture of the treated skin with the surrounding normal skin.. 

I'd suggest seeing an expert for proper skin care at this time and consider fraxel, microneedling/PRP, and Sculptra for collagen building in combination in order for this to improve. Best, Dr. Emer.

Thank you for
your question Stacy WA. I understand your concern. IPL is a great
treatment for facial rejuvenation. If settings and overlap are not appropriate striping can be seen. For example there care be areas that are missed between the areas that are treated. In our office we use the Sciton BBL IPL device which has a large spot size and fast repetition rate allowing for multiple passes in different directions using more conservative settings to avoid such complications. Striping can be treated with more IPL, fractional lasers, and topical products such as hydroquinone. Please consult
with a doctor for specific recommendations. Good luck!