What to do with my mixed and dyed hair?

Ok,so I am a mixed 19 yr old female(chinese,east indian and white)who is wondering what is going on with my hair?!When I was younger I had thick bone straight hair,and now it's becoming wavy and huge.I don't know if it could also be because of my constant hair dying and bleaching,but I somehow doubt it because my hair is extremely strong and I take very good care of it.What are some good frizz control/leave in moisturizers that would work for me?Thanks!