WHY!!!!!!! Another attempt is i trimmed after I flat ironed and it still frizzes! I know it is my hair, because I have tried different flat irons and now I am convinced that is my hair...I dont put heat on it often ( once every 1-2 months.) Sure it looks sleek after the iron has been passed through it and then 15 minutes later it FRIZZES!!!!! After 1.5-2 hours of flat ironing I feel so blown...because I feel like I've just wasted time and energy. What do I do?!!!!!!