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.
In addition, deep condition your hair once a week with a hot oil treatment or deep conditioning hair mask. 1  Apply the oil (preferably warm) or conditioner to your hair. 2  Gently rub your fingers on your scalp in a circular motion for three to five minutes. 3  Rinse the oil or conditioner out of your hair.