Earlier I have used betnovate cream for about 2 years but not continuously 3-4 days in a month. It's been more than 1 year I have completely stopped using it. But now I am seeing signs of melasma on my cheeks, dermatologist prescribed me lumsglow cream for 6 weeks melasma was gone completely and biluma cream after that for again 6 weeks but melasma is coming back. What should I do so it never come back. Please suggest some effective way.