Pros: easy to use -no mixing required, inexpensive
Cons: messy, stains skin and fabrics, only good for blonde hair, no results on med-dark hair

"I purchased the color "Not So Shy Violet" as well as the "Color JamZ Clear Shine" and after reading the reviews here, I was aware the color would be more blue than a true violet. Even so, I didn't get the color I had hoped. I have medium to light brown hair and the results were a purplish black. In my first attempt I didn't mix "Clear Shine" with the color, but just used the coloring by itself and left it on for 25 minutes and the results was just a dark purplish brown. I tried a second attempt by adding the "Clear Shine" to brighten the color to a brighter blue. When I got the desired color in the mixing bowel, I reapplied it to my hair and left it on for 10 minutes. The second attempt only darken the shade even more, so it looks almost black. In bright sunlight, it has an unappealing dark greenish purple color, that makes people ask "what's wrong with your hair?"

So if you're a blonde I assume you could get the desired effect and if your hair is darker then medium blonde, you would have to lighten your hair to a blonder shade as a base and then apply the coloring.

Aside from the failed attempt to color my hair, this product was MESSY. Although the product didn't color my hair blue, it did successful stain my hands, ears, neck, towels, sink, and shower blue. It also bled on my pillowcase and clothes. Word of warning...keep your gloves on when you rise the color out, I made the mistake of removing my gloves and it stained my hands blue which lasted two days.

If you're not a blonde, pass on this product unless you want to go through the trouble of coloring your hair blonde first (as a base) before using this coloring. If you don't, you'll risk having a dark egg-plant purple to black color, which is not worth the mess it leaves on your cloths and bed linen."