i have oily skin and if if i put make up i dont want it to show...

Liquid.... powder doesnt stay on as long. ALtough, if you use liquid and put powder on afterwards, it stays on for longer.

i have oily skin to so i i were u i would use the liquid and then the powder to make Ur skin smother thats wat i do

You should buy some Moisturiser and put that on before putting on foundation then you should use the LIQUID foundation and then when it is dry apply a light coat or natural coloured powder ontop of the liquid foundation this helps the foundation to set and makes it last longer, make sure you remove your make-up every night before sleeping and wash your face everyday, this helps to prevent or reduce oily skin you should also exfoliate once a week to get rid of dead skin this helps to smotthen out skin i had the same skin type as you and i did all or this and it works great.

Hope i helped. x :P