My hair doesn’t like it when it’s too rainy, or too hot, or too cold, or least of all when it’s subjected to products that are designed for heads that are not blessed/cursed with thick, wiry, unwieldy hair like mine. It’s big at the best of times, but add a touch of volumising shampoo and watch the disco fro grow!
Big Hair Metamorphosis 
I know exactly what you mean!! My hair is temperamental on a good day – I put volumising shampoo in it and bring on the 80s!! 😀
Add a bit of back brushing too and who knows how big we could go!