My Hair Gets Really Fizzy After A Shower?

after i take a shower and wash my hair, its really smooth and soft, after about an hour it starts to stick up and gets really clumpy and frizzy. its a bit better now that i switched conditioners, but it still gets frizzy after an hour and a half, any natural suggestions to reduce it? my hair is straight when combed and almost up to my waist and a deep auburn brown (if that helps)