Though my hair is dark on its own I like to keep my hair as blackest black as possible. I started dying my hair at about 11-12 and quickly found that after just a few uses of typical chemical-heavy dyes my hair would no longer take their color. I'm not sure how I stumbled upon Bigen but once I tried out their Oriental black color I was hooked. First off, this black is a deep, intense color that seems to stick to the inside o the hair. Secondly, I couldn't get enough of the smell. It smelled like plants all smushed up in the rain (which is almost a perfect description of it). My hair no longer needed a "toxic" sign and I could luxuriate in the smell forever. Once I washed out the dye I could swear my hair felt hydrated and so soft and shiny. I use Bigen still and because it has been so long that I've used it the length of my hair that has had years of treatments will not fade, bleach, or dye any other color. I basically re-dye to keep up on roots and sun lightened hair (the only thing that seems to tragically defeat this supper black color). If you want a dye that is going to give you exactly the color it shows on the box, doesn't smell like a toxic dump, and makes your hair feel amazing, then Bigen dyes are perfect to try.