Laser therapy has strong pertinence, obvious freckle removing effect and quick effect, but it is easy to leave traces, so long-term maintenance and sun protection should be paid attention to after operation. However, laser treatment of chloasma and post-inflammatory pigmentation is not effective. Laser freckle taboo, such as pregnant women, photosensitive people, hypertension, diabetes and other people are not suitable for laser freckle.

The newly-built DP-A of Xi 'an Tong Yan Tang combines international leading scientific therapeutic instruments with nanotechnology, small molecule biological extraction technology, targeted drug delivery technology of traditional Chinese medicine and cell memory awakening technology, and adopts multiple detection technologies to deeply detect the pathogenic factors of chloasma. According to the test results, a personalized multi-treatment plan is formulated, including facial treatment, internal conditioning, psychotherapy and auxiliary treatment, so as to eliminate chloasma from the root and prevent recurrence. Compared with other methods, it has more advantages.