Depending on the drug used, water light injection has different expected effects such as hydration of the skin, elimination of dullness, improvement of elasticity, improvement of wrinkles and fine wrinkles, and by receiving it regularly and repeatedly, the youth of skin cells can be reduced. It is also effective for maintenance. It is said that the effect begins to appear about 1 to 3 months after the water light injection and lasts for 6 months to 1 year.