Him Welcome to Hcm Hayou have not mentioned since when is it ther or it s recent or developed after any beauty treatment .because if its since long then it wil take time to fade . Nany skin lightening product can hardly cure a hyperpigmemted patch in few days unless it is a chemical peel .But dont worry as there are many methods to mask it or lighten it temporarily . You should visit a dermatologist who ll determine your skin type and problem n treat accordingly .till then drink plenty of water , have a balanced diet, ur may take a multivitamin .try natural alovera gel applicatipn. Thanks