Hi, this is my first post on this board, though I first started visiting hair boards five years or more ago. It's nice to see some familiar names from the old Black Hair Super Growout board
I've been relaxing my own hair for well over ten years and I've always waited about four months or more between touching up my new growth. I relax to decrease the volume of my hair. Without a relaxer, it is so full that it looks like I have enough hair for three or more people. With the relaxer, it just looks like I have enough for two. lol
The back half of my hair is wavy and grows in the shape of a stretched out "S". For the first inch or so, the "S" appears to be straight because it hasn't begun to bend. It's the bend that creates the volume in my hair, and it takes about 2-3 inches of newgrowth before I begin to notice the waves and am bothered by the poofiness and volume they create. It's like the newgrowth suddenly sneaks up and shocks me at that point.
The front half of my hair is less wavy and almost straight, but I still relax that part to decrease volume as well.
Even though my hair grows at a fairly rapid pace, if I retouched at 6 weeks or so, I wouldn't be able to feel the newgrowth and know where to place the relaxer.
I think the key is to go with what works best for your hair. It wasn't until I started visiting hair boards that I learned that some women's newgrowth bothered them even at 1/2 inch, and that the difference in textures caused breakage and other problems for them.
My sister and nieces have hair that is a different texture than mine and I recently learned that they get touchups every 4-6 weeks. However, their hair breaks off at about neck level or shorter. I'm not sure if it's such a good idea for them to relax that often because I think it may be causing the breakage and dryness of their hair, but they say that if they don't, it will just break off at the point of the newgrowth/relaxed hair anyway.