The Best Temporary Hair Colors to Wear on Halloween, Based on Your Costume

Hally Dark Mode Black Hair Color ($15)

If you have light or brown hair and your costume calls for a jet-black color, this product from Hally uses an ammonia-free, foam formula to gently darken your hair in just 30 minutes. You can easily recreate the look of Delores from "Beetlejuice," or even opt for another character with jet-black hair like Shego from "Kim Possible."