Hi everyone! I have tinea versicolor since I was a teenager. I started using selenium sulphide 2.5% recently. I have read selenium sulphide eliminates Tinea versicolor in just one week.it has been 4 days since I started using the shampoo but my spots don't seem to fade. do they immediately go away after a week or are they supposed to fade slowly? thank you for your help :) :)