Found this at a Grocery Outlet (discount store) for about $6. I get itchy scalp, but also have very sensitive skin; menthol or peppermint type of ingredients cause more irritation.
This has 2.5%...
About reviewer (261 reviews)
Age56 & Over
SkinSensitive, Fair, Neutral
HairSilver, Curly, Medium
EyesGray