Blue Light Disrupts Circadian Rhythm at Night Causing Direct Effects on Skin Cells
Since entering the industrialized age, we have introduced artificial lights in our life, this is called Light Pollution.
The skin, as the largest organ in our body, is directly exposed to the environment/light and serves as a key sensor and a protective barrier. Each skin cell contains clock genes that control and synchronize cellular activities for optimal benefits to the skin.
• When skin cells become out-of-sync they lose some ability to repair and accumulate more damages. It is critical to continually restore this cellular synchronization in order to keep skin healthy and young.
• Our results show that skin cells can see and are very sensitive to blue light, which has a direct impact on Per-1 clock gene level as well as free radical production.
• This, ultimately, will result in a skin desynchronization with a loss of circadian rhythm and acceleration of skin aging.