I had a hair fall problem due to covid-19 vaccine and my scalp became flaky but not itchy, or what is known as scalp psoriasis. Decided to try &.Sons shampoo and serum before I go for corticosteroid & minoxidil as my last resort, I was lucky that it works really well. Hardly see anymore hair on my bathroom floor after washing my hair like before and even though the scalp psoriasis still there, it improve a lot now.