Hair question! :) plz help! thanks.?

Hi I'm a 14 year old girl with very curly and frizzy hair. I like it better straight so i was thinking of buying herbal esssences dangerously straight shampoo and conditioner. Also, because my hair is also very frizzy and curls very fast after just straighting it, i was going to but herbal esences none of your frizeness smoothing conditioner too. I was wondering if I could use the shapoo and then the conditioner and then wash out the ist conditioner and put it in the 2nd conditioner and wash it out and then if it would still work even though im using two different kinds. am i better off just using one? plz help thanks! :)