Endothermic atmosphere is prepared by reacting a mixture of hydrocarbon gas, typically methane or. propane and air, metered in a proportion such that there is just enough oxygen to form carbon monoxide. and hydrogen without excess carbon dioxide or water vapor.
But for your everyday run-of-the-mill deep conditioner, it should begin to work instantly, and reach maximum capacity at around the 20 or 30 minute mark. If your deep conditioner doesn't work after 30 minutes, it's time to ditch it for one that's more effective.
The general rule is to wait four to eight weeks before coloring your hair again but as we just learned itâs not always necessary. If your hair is strong and you use a dye which is not too harsh then you can try to wait a little less than that and everything might still turn out fine. In most cases you can feel if your hair is OK and you can dye it sooner or if itâs damaged and needs to be fixed first. Anyways, regardless of the hair type you have and all other things, thereâs no guarantee that your hair will be severely damaged even if you color it, letâs say, twice in one week.