Why doesnt it smooth down?

ok so i straightened my hair yesterday with my instyler.i also blow dryed my hair before straightening it.i used silk elements heat protectant. i was hoping my hair would be smooth and stuff but no, when i grab a piece of hair and let it go it forms a big clump instead of falling down smoothly. please help why isnt my hair smooth. i have curly hair but just a tiny bit on the wavy side but still curly. my hair is straight but my problem is that its not smooth?? :O