There is a teeny tiny nail/hair/tanning/other salon here in my community college town that offers $5 shampoos. I have hair to a quarter of the way down my thighs and when neither me or my husband have the time or energy to deal with it, I pay the very nice lady there to wash it. It is well worth $5. No blowouts, just a towel dry (I bring my own towel because it's a lot of hair and it's easier), but it's so nice to have someone else deal with my hair.