Tried because I was curious. Shockingly it worked-ish. I ordered the white. I have black hair and I have used it twice now for added streaks. Of course I was not expecting bright white in MY hair but honestly I was not expecting it to even show up in my hair. The results are a subtle bluish / Stainless Steel color (which I love!)I found after about 30 mins it dries into you hair a bit and you can brush and blend pretty well if needed.
Love the hair wax. As long as it is dry it doesn't get everywhere . It is easy to apply. WORKS ON NATRUAL HAIR. Just make sure you work in sections and be aware the colors vibrancy will depend on the darkness and density of your hair. For example it's more of a darkish burgundy on me but I still love it. Pro tip: mix it with your leave in for efficient coloring .