White bubble can be typical after laser tattoo removal and will fade with time. Tattoos can be removed with q switched or pico lasers. It will take a series of treatments for removal, but it's difficult to tell you how many is needed. I recommend getting a formal evaluation with a laser tatt...
Unclear as to why Hypopigmentation with Picosecond technology is occurring as that is most unusual with newer picosec0nd lasers.
Nevertheless, a good tattoo artist should be able to handle this type of coverup for hypopigmentation.
Best of Luck,
Dr. Amy
This is caused by the laser removing some of the natural pigment when removing the tattoo. It is unavoidable in most cases. I would continue to remove the ink until you are happy. At that point, consider laser resurfacing, PRP, and microneedling to improve pigmentation.