"Well I've been hearing a lot about perms and I am 13 weeks post because i thought my beautician was over-processing my hair when i went to get a perm. So when you get a perm aren't you supposed to perm only the new-growth? Because she perms the new growth and then applies the relaxer throughout my whole head from root to end? Isn't that over-processing?"
Advice: YES! You should speak up and let her know that there is absolutely NO NEED to relax previously relaxed hair! Putting relaxer on the entire head is only acceptable when performing a virgin relaxer, meaning, you have natural hair and you want to chemically relax your hair for the first time. Only in this case should you relax from root to tip. Once your hair grows out, 2-3 months later, you should receive a "touch-up". A touch-up is when you relax the new growth ONLY. There's no need to re-relax already relaxed hair....it's already been chemically altered to remain permanently straight.
Relaxing already relaxed hair is called "Over lapping". Repeatedly relaxing all the hair on your head is a good way to damage your hair and cause thin hair strands which eventually leads to breakage. When performing a touch-up, keep the relaxer on the new growth as much as possible and avoid re-relaxing previously relaxed hair. Many hair professionals are careless and lack vital information when it comes to maintaining healthy relaxed hair. They typically misuse these chemicals by relaxing previously relaxed hair from root to tip or they leave the relaxer on too long, also known as "Over processing".
Tip: Prior to applying relaxer to new growth, be sure to coat the ends of your previously relaxed hair with some type of conditioner, oil or Vaseline. This precaution will help prevent over processing of previously relaxed hair since the relaxer will have a hard time penetrating. Overtime your hair will become healthier. Also remember to condition before and after your relaxer :)