How does Red light therapy help hair loss?
It works by using light rays to target the area to be treated with the motive of stimulating the follicles in that area to produce new hair growth. The light waves are targeted at a bald area on the scalp which warms the skin, hence, increasing blood circulation. The reason behind this is that the increased blood flow will carry nutrients and oxygen to the follicles to stimulate hair growth. Visible red light has the ability of being absorbd by molecules of hair follicle and can initiate the growth or re-growth of the hair following a natural biological process. For this reaction to occur, the light must be absorbed. An intracellular enzyme called cytochrome c causes the red light to be absorbed. This enzyme is capable of absorbing the light and is also responsible for sending certain signals to stimulate the hair follicles. Gene activity is promoted and apoptosis lowered by those signals.
There can be re-growth of hair in around 50% of patients using red light therapy but this varies among people. Red light therapy treatment takes approximately 15 to 30 minutes depending on the extent of the locations to be treated. No pain or discomfort is felt during this procedure. The most widely used wavelengths for treating hair loss with red light therapy are in the range of 630 to 670 nanometers (nm)
Unfortunately, not everybody can benefit from red light therapy treatment for hair loss. If one has a mild form of hair loss then there is a better chance that red light therapy treatment will be of some great benefit. But if the person has severe or moderate hair loss then this treatment may not be the best option. The sooner the treatment is started, the better the chances of success.
Red light therapy for hair loss treatment has not been associated with any harmful side effects or pain when the devices are used according to their Instructions. Red light therapy can stimulate follicles to improve hair growth However, it will not lead to hair growth where no hair was previously present.