Wookster, didn't you read Bryan's posts where he suggested that shampoo ingredients may actually have a stimulatory affect on hair growth?
"Induction of hair growth by skin irritants and its relation to skin protein kinase C isoforms." Br J Dermatol 1999 Apr;140(4):616-23.
"Induction of hair growth by skin irritants and its relation to skin protein kinase C isoforms." Br J Dermatol 1999 Apr;140(4):616-23.