What are the “black spots” that appear after age spots? How to solve them?

When using picosecond laser to treat age spots, I believe everyone will encounter the problem of “blackening again” after the treatment of age spots. Many people ask, after the scabs are removed, the age spots are indeed gone, but after about a month, they grow again. How to solve this?

• Website URL: https://www.litonlaser.com/picosecond-laser-treatment-for-age-spots-and-pigmentation/