Washable hair dye or color refers to a temporary hair color, which can be applied and removed afterward without having to re-dye it i.e. you will get your initial color back. Now, Crazy Hair Day ended up being a long day out of the house for various reasons, so we didn’t have the chance to wash his hair before bed. I'd use that (I used it today to dip-dye the ends of my 8 yo DD hair today). Superdrug do a wash in/wash out colour for about £1.50. If we had, perhaps the end result would have been different.

Wash out hair color and temporary hair color are one and the same; they’re a type of hair dye that—as you may have guessed—washes out in just one shampoo! You literally use your hair as a canvas, and then wash it right out. Shop for kids hair dye online at Target.

Temporary Hair Dye, Hair Chalk Comb, Hair Dye Kit, Dye Touchup Mascara, 6 Colors Hair Chalk Non-Toxic Perfect for Girls Kids Adults for Halloween Christmas Birthday Party, Cosplay 4.3 out of 5 stars 64 No harsh chemicals and will wash out. Free shipping on orders of $35+ and save 5% every day with your Target RedCard. This is super convenient if you want to try out a new hair color but aren’t ready to commit for the long haul—or simply want to rock a fun new shade for a night out. Susan Meyer. I'm sure I was using Shaders and Toners when I was 10 (shows age)

Susan Meyer's 11-year-old daughter, Abby, colored her hair with a semi-permanent dye that washes out over a 3-day period.

I wouldn't use bleach/semi or permanent dye on a child though. As it was, the Red and the Purple didn’t wash out for about a week, though it wasn’t very bright after the first wash. Yes, you read that correctly! As the name suggests, you need only to wash them with your shampoo and warm water and they will easily come out.