Just mix filtered water, aloe vera juice(not the kind you drink, but the kind from the health food store that is watery and thin), and a few drops of lavendar or tea tree oil in a plastic squeeze bottle. (an old mustard or ketchup bottle would work) Just squeeze it right onto your scalp, and rub it in. It feels best if you keep it in the fridge. Do be careful how much oil you put in, both tea tree and lavendar are antibacterial and can burn your skin.
It feels great, and it doesn't leave your whispy hair oily or caked with goo.