What if ketoconazole doesn't work anymore

[sea of possibilities]

Hello.

 

For the last months ketoconazole hasn't been having any effect on my seborrhoeic dermatitis. I switched to another brand (sls free) but it doesn't seem to make a difference.

 

This is bad news for me since interrupting it led to my losing a lot of hair and it generally had great results with both s.d. and maintaining my hair back in the day.

 

I decided to use another pharmaceutical shampoo so as to cleanse the scalp first from all the sebum and then try afresh with keto. My question is, will keto have the "dht-blocking" effect it once used to afterwards?

 

Has this ever happened to anyone? Any suggestions please?