Revlon - ColourStay.
4. Maybelline - 24 Hour SuperStay.
I think if any makeup product, concealers are one of those I wouldn't mind wearing (although makeup & I don't seem to mix all that well). I wear concealer here & there, most concealers are best for blemishes/scars, not pimples/zits, in my opinion, especially the ones that contain SPF or some sort of moisturizer to not only block the blemish/scar, but heal it as well.
What is your choice of concealer?