👉 Ch veins, also known as spider veins, are small, thin, and superficial blood vessels that appear close to the skin's surface, often on the face or legs. They are typically red or blue in color due to the pooling of blood under the skin's surface. Ch veins can be caused by various factors, including genetics, hormonal changes, sun exposure, and prolonged standing or sitting. Treatments such as laser therapy, sclerotherapy, and topical creams can help reduce their appearance.