PURA D'OR M.D. Anti-Hair Thinning Shampoo with Coal Tar is a 16 oz shampoo from Pura d'or. It is offered in a Standard option.
I was skeptical about the coal tar scent at first but it's actually pretty mild and washes out fine. Two months in and my scalp isn't itchy anymore, plus I'm shedding way less in the shower drain. The 16oz bottle has lasted me forever too.
After about three weeks of using this, I’ve noticed a lot less hair in my shower drain—the combination of coal tar and biotin seems to do the trick without leaving my scalp feeling stripped. The 16 oz bottle also lasts longer than I expected for daily use.
The coal tar in this actually calmed the flaking I've had for years, and after about a month there's noticeably less hair in my brush. It smells medicinal, which I don't mind, but the 16oz bottle lasts a good while.