For over a year now, I had been concluding that Sensitive Scalp Relaxers can cause thinning and dry scalp problems. It is now that I have started to convert my sensitive scalp clients to Paul Mitchell relaxers, that I see significant improvement to their hair and scalp.
Many sensitive scalp relaxers still have sodium hydroxide in its contents. The sodium hydroxide is held within a calcuim hydroxide unit. So then you have to worry about a calcium buildup after the sodium hydroxide unit is released.
Some relaxer systems use guanduiane hydroxide, etc. I believe all of the sensitive scalp relaxers leave leftovers deposits in the hair and scalp.
Also, according to www.long-healthy-hair-advisor.com/relaxers-for-black-hair.html:
Here are some of the problems with no-lye relaxers:
The chemical uses a calcium compound (calcium hydroxide) that builds up on the hair. This build-up keeps the hair from getting any moisture because it seals off the cuticle. They cause a dry scalp. They cause extremely dry hair. A "conditioning lye relaxer" is best.
Now, in my opinion, my clients that are on sodium hydroxide or "lye relaxers" have had no hair nor scalp challenges. Other words, no problems!
If you are slow to get off the sensitive scalp formulas, try using Organic Root Stimulator's Creamy Aloe Shampoo to remove buildup for regular shampoo services. Try KeraCare's Demineralization Wipes during the conditioning phase. Wipe in the direction of the cuticle. Straight Request brand also has an After Calcium conditioner.
These products should help remove buildup in the hair, but they may not be enough to treat any scalp challenges such as dry scalp and/or thinning.
My favorite lye relaxers are 1) Fiberguard Affirm (has Fiber Strengthening Complex) and 2) Paul Mitchell.
I used to think the sodium hydroxide or lye was bad because it caused people to burn, but now, I know that when it is mixed with the right conditioning ingredients versus a hydroxide derivative, the original is best!
In addition, Mild Paul Mitchell and Mild Fiberguard Affirm are safer to use more frequently on coarser hair. Every 5 to 7 weeks is good for extremely curly, coarse hair because the mild strength will only texturize it. Also, I add the Paul Mitchell SuperStrenghtener to every relaxer process as well as a Mizani Butter Blend spray and Graham Webb's Back to Basics Coconut Mango to balance out oil and moisture blend.
Yes! A lot of products, but it is worth it to have healthy, long hair!