Age spots, also called age warts or seborrheic keratosis, are benign growths on the skin. Its age of onset actually begins in the thirties and forties, and as we age, the number of lesions grows and the age spots become more severe. In the clinic, we do find that many women in their forties have age spots on the back of their hands, and the reasons for this are as follows: 1. The back of the hands is an exposed part, and it is easy to develop age spots when exposed to ultraviolet rays of sunlight for a long time; 2. This kind of people often cook at home, and they come into contact with oil or hot water, which splashes the back of the hands and leads to the damage of the local skin barrier, and then through the wind and sun, which results in the emergence of age spots; therefore, it is mainly due to the above two reasons. It is mainly due to the above two reasons.