The blush is blendable IF your skin has some hydration to it, such as from a moisturizer. I have very light skin and I must roll it over my cheek area a few times in order to get adequate color. I'd say that if your skin is a darker shade you could use this to blend edges from a darker shade of blush. The outside case is dark but it is NOT a dark shade.
I like it very much and I will probably order it again.