I don't hate washing it. But I do hate combing it out afterward. It's quite long, fine, wavy, and tangles easily.
When it was short, that wasn't such an issue, and I washed it every day or two. My scalp gets oily and itchy. Now I wash it about once a week. I have been unable to find a swim cap that actually keeps my hair dry, so I usually shampoo after my weekly swim, when the hair is going to be wet, anyway.
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A finger in every pie.