When I buy it in the box, there's a tube of color, developer and conditioner. But when I want to mix 2 colors as I said, its hard to know how much color I'm getting out of each tube. Say if I'm using 1/4 dk. blonde and 3/4 lt ash brown. Because the color is in tubes and you can't see through them its just a guess in how much you're using. Am I explaining this right?? Lol And I like to save the color for next time so I can't just take all the color out of each tube. Its about $13 for each box so I try to be able to use twice. As long as the developer isn't opened in any way then its safe.
3b, fine textured,thin and normal to high porosity.