If you're a 4a and you want a smoother look to your hair, then I say go for it...I'm a 3c/strong 4a and my pattern is not the same as it used to be...I washed and air dried for the first time the other day and my hair was straight with a little wave to it...I have looser curls, but I don't mind the change, I like it alot...talk to a stylist who can explain everything to you...my hair looks like it's been relaxed, but it hasn't and I enjoy the versatility...I got rained on so bad a couple of weeks ago and I did not have a poof or a frizz, it was great and when I wash and style my hair it's half the time...