Sebaceous hyperplasia Sebaceous hyperplasia occurs when sebum gets trapped in an oil gland. When this happens, the gland becomes enlarged and causes a small, waxy bump on the skin, usually on the ...

The sebaceous gland is sensitive to acetylcholine that is stimulated by nicotine. Acetylcholine leads to cellular modulation and differentiation, inducing hyper-keratinization and influencing sebum ...

I've tested dozens of red and blue light therapy masks–and Shark's CryoGlow cooling, de-puffing LED face mask is my favorite. Here, my honest review of the light therapy device.