Adults with veins on the face usually consider the cuticle is too thin, genetic factors and other causes. 1. Thin stratum corneum: the so-called veins on the face, in fact, is the superficial veins of the face, generally when the patient’s skin stratum corneum is too thin or skin color is white, subcutaneous blood vessels can be seen through the skin, visible to the naked eye, this is a normal phenomenon, related to the individual’s physical condition, usually without treatment. 2. Genetic factors: the so-called veins are generally superficial facial veins. Due to genetic factors, some people’s facial veins are more obvious and visible to the naked eye. There are many other reasons for the appearance of veins on the face of adults, you should consult a doctor in time to clarify the cause.