Hi i might have an idea but not sure if it will work i had my hair curly once when i went to my local hairdressers and said i liked it but after about a week i didnt like the curls and told my hairdresser i wanted it to go back to being straight so wot she done was put a perm on my hair without rollers in and just combed my hair down and after the perm had set she checked it out and said it was looking straight a i always thought if u have a perm, a perm was always frizzy an she said no u can have a perm how u like, its rollers that make it curl if u want it straight u just comb the perm down the hair and since that day ive never gone back to curly hair, the only thing i have is a natural kink which i cant get rid of lol so dont know if my answer is any good but good luck in wotever u decide mel xx