Mesotherapy is a method used in the treatment of aesthetic problems such as skin blemishes. A special solution is prepared according to the type and characteristics of the stain, this solution can usually contain different active ingredients. Using fine-tipped injectors, this special mixture is injected directly under the skin of the stained area. The injected substances can lighten the colour of the spots by regulating melanin production or stimulate skin regeneration. The treatment is usually quick and relatively painless, but several sessions are usually required for best results. This type of treatment should be performed by a specialised dermatologist or aesthetic physician.