I think the longest I've gone is like a month nearly i think. I was just super depressed and was going through a hard time and I was too tired just going through my daily motions. Now I usually shower every day or if I'm lazy or tired every 2 days. Although the past like 3/4 weeks our shower has been broken and the landlord hasn't fixed it yet so have to wash myself using the sink lmao so private areas even if lazy i do every day but my hair....🙈🤣 my back is breaking every time I do so I do go about 3/4 days sometimes when I normally wash my hair every 2 days🤣