You can use a homemade breast whitening film. The preparation and use method are as follows: honey 1 part and flour 3/part (i.e. 1:3) are stirred into a facial mask and applied to nipple areola. /kloc-Wash it off after 0/5 minutes, and then apply it with a hot towel several times (the hot towel is cooled once). Wipe with cotton pad and alkaline emulsion (toner, full emulsion) after application.