Is Eumosone And Mometasone Cream Appropriate For Pitryiasis Alba?

Sir, my son aged six years was having white patch on face, doctor diagnosed as Pitryiasis alba and gave eumosone and mometasone cream, after using this cream that patch has gone. After few months again white spot came below the eye lid then also same cream was used and the same vanished, but now the same problem arised but people are advising not to use steriod creams and asked to use moisturizer, but with moisturizer no result, kindly advise what I have to do. Thankyou.