For my last two relaxers, I switched back to Affirm Fiberguard from Mizani. The first relaxer, I applied silk amino acids directly to my hair. I mixed into the relaxer itself: hydrolyzed wheat protein, jojoba oil, and avocado oil. The second relaxer I added cholesterol and wheat protein to the relaxer. I think I had better results the second time around because I put less proteins in, and I concentrated on porosity control, and levelled out my pH balance.
After I rinsed out the Fiberguard relaxer, I applied Affirm Positive Link Conditioner and let it sit for a while. Rinsed. Then neutralized.
Both times, I had underprocessed sections, but that has to do with my application skill, and not so much the relaxer. Fiberguard does not burn, and is kind to the scalp. I did not feel any heat, not until towards the very last minutes of the process.
For my 4b, coarse hair, so far Affirm keeps my behaving. It relaxes but not bone straight, so I still have some body to my hair.