i wash my hair every day (when I'm not at camp). I have incredibly thick hair, and its just gross when I dont. Like, its not bad, but if I don't do it the next day, ill get lazy and I won't want to after. XD
at camp, however, we wash in the lake - its Huron Lake, one of the Great Lakes, so its really clean. But we have to use biodegradable shampoo, conditionner and soap, so that really limits the product selection. Aussie and Live Clean are definitely the most popular brands, and I find that Aussie cleans the best, and leaves the softest feeling.
At home, I use head&shoulders shampoo and Dove conditionner.
ONCE IN A MONTH! heck that's crazy .. I mean there so much dust and pollution in the air .. plus the sun .. plus the oils that the hair produces .. once a month is crazy! I wash my hair every 2 days , because it is extremely straight , fine and sensitive .. so a day in the sun would require another washing ..
I am the same as petitebrunette. I wash my hair and use conditioner every other day...otherwise it will start to get a bit dried out for me. Some people I know have to wash their hair every single day or it looks really oily and gross, but others can skip a day and be just fine, like me. Only once a month...that's not enough in my opinion, unless you are shaved bald.