一般说来人脸上的色斑以黄褐斑为主，其形成的原因：一是内分泌失调；二是青春期痤疮留下的后遗症；三是滥用药物，如外敷激素类药膏等；四是化妆品使用不当；五是某些物质的缺乏如维生素Ｅ、Ｃ等；六是长期日晒；七是不良嗜好如吸烟喝酒；八是不良生活习惯，夜生活过度；... Generally speaking, the stain on the human face mainly consists of chloasma, which is caused by the following reasons: one is endocrine disorders; the other is sequelae left by adolescent acne; the third is substance abuse such as topical hormone ointment; the other is cosmetics Improper use; five is the lack of certain substances such as vitamin E, C, etc .; six long-term sun; seven bad habits like smoking and drinking; eight bad habits, nightlife over;