Melasma takes months and years to go. Treatments are peel / q switch, Gfc treatments,  Transemic injections are needed,  topical creams for lightening  will be given in rotation,  with sunscreen,  and oral antioxidants. Don't expect miracles with Melasma. They can increase and reduce with hormones as pregnancy n stress also But definitely can be reduced and controlled. For detailed information please visit dermatologist.