I have a medium tan, olive skin complexion with yellow undertones. So it is had to find drugstore brand products to match my skin tone, as most just cater to fair skin tones with pink undertones. However, with this I could managed to find a rare match. My shade in this is 25-medium and it is an exact match for my skin tone to cover up blemishes. (I might have to find a slightly lighter colour for under eyes though.)
For now I use this with ELF under eye setting powder which is a slightly light colour with tiny shimmers. This combo is enough to keep my under eyes bright and crease free.
I like the coverage, texture and blendability of this product. It lasts long and if you bake and set it well it won't budge.
As the title suggests this is not the worst concealer I have used but it is also not the best. It does have good coverage and lasts on the skin however I found it creased a lot, even with setting powder