Fwiw some years back, I was on a week-long visit with a friend and I had forgotten my shampoo. All he had was Head & Shoulders dandruff shampoo. I used it once, just once. After that I dealt with dandruff for years.
Probably caught a fungal infection from it. A lot of dandruff is caused by fungi.
A lot of skin issues are caused by fungi in general. Most recurring skin issues are underlying digestive issues or fungal issues. When I went to a foreign country, I found they could purchase very strong antifungal steroid cream over the counter where we'd definitely need a doctor's visit to get. They used it all the time. That shit heals everything, quickly.
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