Our off black color is a kind of very dark brown color, it's darker than the dark brown color, and it's lighter than the jet black color And the off black color can be colored. Material: Real Human Hair Function: add hair volume, cover grey white hair, cover thinning hair The real human hair can be washed, restyled, straightened, curled... This hairpieces can be used to cover medium grade thinning hair on the top Question & Answer: Q: How to tell human hair with synthetic hair A:It is easy to tell by burning and smell : When burning , the human hair will show white smoke. While synthetic hair will be a sticky ball after burning and will show black smoke. Moreover, human hair may have very few gray hair and split end. It is normal and not a quality problem.