Over time, and long-term exposure to testosterone, some of the fine vellus hairs may undergo a conversion and become the darker, longer terminal hairs. This terminal hair then sticks out of our noses ...
Layers, layers, layers.
In terms of noise levels, I didn't find it to be as loud as the Revlon, but not as quiet as the Dyson Airwrap. I think the Glossi is suitable for most people, unless you're really sensitive to noise, ...