We were unable to pay our gas bill on time so there's no hot water but we're getting it turned back on tomorrow. I haven't showered since Sunday and I feel gross as hell. My hair is greasy and I'm just at maximum discomfort. Is it alright to shampoo and condition your hair in just cold water? Will it get my hair clean, wash away the excess oil and such? I've never had to shower in cold water before so I honestly don't know. Should I just wait and suffer for one more day?