I have been using the Roux Porosity control extreme moisture pak (comes in a silver pouch) and only 1 BSS sells it locally around here. The ingredients are a little different from the bottle version. My hair is fragile, and needs constant moisturizing. I have been using this for about 4 months now, and it definitely helps in laying the cuticle down, and smoothing the hair, especially after a rollerset. I think it pretty much balances out the porosity on the hair if you're shampooing with products that have high ph levels that make the hair porous. If you use products for shampooing and conditioning that are ph balanced (like AO, and Giovanni) you probably won't need to use the Roux porosity control as much. When I do use it, its always after deep conditioning, in the final rinse. I've heard some ladies mix it in with their conditioners, or use it before perming with excellent results. Your hair will let you know if you're using it too frequently. It'll have a different feel, and you'll know.
It's what helped me to stretch my relaxers to 6 months post now and is helping with my transition.
