Witch on your opinion are 3 MAC blushes that can flatter and suit almost every skin tone and can look good on (almost) every girl, and are absolute must have?
Plum Foolery, Springsheen and Coygirl. The first two are sheertone shimmers, and the last is a sheertone, so they're buildable, and adaptable for every skin tone!
I don't think PS would suit all skintones, personally. It would barely show up at all on medium or dark skin, it's better for fair skinned persons. I'm fair and PS shows up very lightly on me.
I'd probably get a more pigmented blush and then use a stippling brush to apply it lightly on the more fair skinned persons, but at least that way it will also show up on med to dark skin.