After doing the operation that removes dark circles, how long will it take to grow dark circles? There are many reasons for the formation of eye bags, such as hereditary simple fat bulge, congenital orbicularis oculi muscle hypertrophy, acquired aging and relaxation of upper and lower eyelid skin and so on. There are two kinds of treatment methods, introverted and extroverted. Introversion method is more suitable for people with congenital inheritance between 18-25 years old. Simple fat swelling and relatively tight skin can achieve the effect of flattening the skin and eliminating bags under the eyes after finishing.