The invention discloses composite hydrogel and application thereof in removal of benign
hyperpigmentation, and belongs to the field of medical cosmetology. The composite hydrogel comprises perfluorinated carbon or / and semi-fluorinated
alkyl and a
gel matrix, wherein the weight percentage of the perfluorinated carbon or / and semi-fluorinated
alkyl is 1-60% relative to the total weight of the composite hydrogel; the perfluorinated carbon or / and the semi-fluorinated
alkane is / are dispersed in the
gel matrix in a
liquid drop form; in the liquid drops, the ratio of the number of the
liquid drop particles with the
diameter larger than 100 microns to the number of the
liquid drop particles with the
diameter of 1-100 microns is not higher than 0.1. When the composite hydrogel is used for assisting
light therapy, especially for assisting
laser in removing benign pigmentation, besides providing light-guiding and heat-conducting properties, the composite hydrogel also has gas-dissolving and anti-inflammatory properties, can effectively accelerate healing or relieve uncomfortable symptoms such as burning, pain,
skin redness and swelling,
inflammation and
skin whitening of patients, enhances the
visibility of light spots, and has a good application prospect. The safety of
laser treatment is improved, the defects in current clinical application are overcome, and the
laser treatment device has extremely high clinical application value.