Laser energy is absorbed by a specific target such as a hair follicle, spider vein or skin wrinkle. The laser is extremely precise and only the skin that needs treatment will be affected. In some cases, a numbing agent may be used on the treated area. In most cases, there is no downtime and patients can immediately return to normal activities. Occasionally, the skin may be slightly red and tender after treatment, but this minor reaction soon dissipates.