All he needs is 50% water mixed with Lugols 5% and applied directly to the scalp, then Towel dry. I suffered for DECADES with severe dandruff. NOTHING worked. Expensive shampoos, Dandruff Shampoos, etc. etc.
The dandruff VANISHED on contact! This treatment lasted about 8 weeks before I needed to repeat it. Stubborn spots on the scalp may need to be treated for 2 or 3 days.
My Dandruff was never stinking, but I still think this procedure is well worth trying, especially since it might give him immediate results like it did for me.
IMO, he should also take the Iodine protocol for optimal health.