Greasy Hair ?!? PLEASE ANSWER?

Okay.. so I have brown hair, shoulder length, it's thick, and it's greasy. Because I dont wan to to look gross, I wash my hair everyday. Now, I know that washing your hair everday is bad, but If i don't, It gets even more greasy. I can't go one day without taking a shower. And now, even after my shower it starts to get greasy. I know it's gross.. but it's not the bottom of my hair, it's the top by my scalp and underneath. Another answer I get is that I'm "using too much conditioner", however, I do not use a lot at all, and when I do, it is only to the ends of my hair. I honestly don't know what else to do. heres the thing: I have tried baby powder, baking soda mixed with shampoo, and even head and shoulders shampoo and conditioner. I have heard a few things like get a silk pillowcase and things like that, but I don't know if it works. Does anyone have any ideas.. or tips on a good conditioner, shampoo, or something else to help? Also one more additional thing, even if I get out of the shower and blow dry my hair it still dosen't work. I am desperate, please answer ! Thank you.