Take for example the method found in the secret tales of the inner court in the chapter Chuan Jia Bao: Take goose eggs, extract the egg white, and mix it with a certain zhenhang powder. After applying the mixture, do not go outside at all. After ten days, your skin will be like pure-white jade.
像錄自《傳家寶》的內廷秘傳白肌膚方：鴿子蛋不拘多少，取清調真杭粉，如搽粉狀不可見風，如此十日後肌膚瑩白如玉。