Oil build-up theory


So I started this method of not shampooing in December and have loved the results. I just have a question about the oil build-up. Is there scientific evidence to support the theory that shampooing every day causes your hair to release extra sebum?


No. I’ve come across a couple of articles that claim the idea is bullocks.
Here’s one of them:

Personal experience? I do get to stretch the time between washes longer. However, I have no idea whether that’s caused by not using shampoo or all the other no poo rituals (f.e. stritching and preening)