Ooly Hair Doodlers 頭髮蠟筆（6入組）

The rainbow of 6 colors gave my daughter endless options for her Halloween costume, and the crayons glided on her brown hair without any mess. They washed out completely with one shampoo, which was exactly what I hoped for.

The blue shade actually showed up nicely on my medium-brown hair, which surprised me. It washed out completely after one shampoo, just wish the colors lasted a bit longer through a sweaty day.

The rainbow set works fine for a quick costume change, but the colors definitely transfer onto collars if you don't set them well. Still, for the price and how easily it washes out, it's a solid pick for a one-day event.