I had IPL which worsened melasma and hyperpigmentation. Will Picosure/Enlighten help?

No photos were provided, so specific recommendations are not possible. However, in general, so-called light, and relatively expensive laser and other energy-based treatments are backed far more by device manufacturer hype and social media influencer misinformation than hard science. So, going forward you might wish to consider some more conventional, less expensive approaches to treating melasma. These include certain prescription topical medications accomapanied by a series of in-office superficial peels, such as with high concentrations of salicylic acid or glycolic acid, Jessner's solution, or low concentration TCA. Manually performed (no need for extra expense and risks of added RF) microneedling may also be combined with the above. All of the aforementioned have a real track record to support their use. Finally, the added and offlabel use of topical and oral tranexamic acid can be considered, as well. And once again, a healthy dose of "buyer beware" is strongly recommended when evaluating so many of the expensive supposedly "new and improved" bells and whistles aesthetic devices are being hawked to you. Hope this helps and best of luck.