Yes homoeoapthic medicine can stop it.. but need some more details to prescribe an accurate medicine...
still you may take homoeopathic medicine
Rumex 30 tds for 1 day...
topical application of Rumex occidentalis extract reduced age spots by 15% after three weeks, and by 25% after six weeks compared to baseline.
... Other research supports the efficacy and safety of Rumex occidentalis extract for lightening skin discoloration in melasma patients.