Laser Therapy Cap for Hair Regrowth

The light source of the electric laser hair growth device is visible red light, generated by laser diodes with a wavelength of 650nm. It has strong penetration and radiation power, providing the necessary energy for regenerating hair follicle cells. The soft laser penetrates deep into the scalp, reaching the root and hair bulb cells, supplying ATP required for cellular division and nutrient transportation. The laser energy stimulates biological activity, accelerates hair follicle cell division, promotes hair growth, increases the vitality of hair follicles, expands blood vessels, enhances blood circulation to the hair follicle nutrient supply center, and regulates endocrine function, thereby promoting hair growth in individuals experiencing hair loss.

The feasibility of laser hair growth has been discussed for many years. The principle involves low-level laser therapy using a specific wavelength (usually 650nm) and low energy (around 5mW) to penetrate the cells of the scalp, providing beneficial stimulation to the scalp cells. This stimulation accelerates blood flow, improves microcirculation, facilitates nutrient absorption by hair follicles, repairs follicle tissues, prevents tissue death, effectively reduces hair loss, and promotes new hair growth. Laser hair growth therapy has been clinically used for nearly 10 years in European and American countries, with high effectiveness reported.

The laser hair growth cap is a branch of semiconductor laser treatment devices. The technology used in hair growth caps can utilize LED or LD, or a combination of both. LD, also known as a laser diode, amplifies light through induced emission. LED, on the other hand, releases energy through electron-hole recombination. The differences between the two are as follows: LED has a wide wavelength range and a large emission angle (over 50 degrees), making the light source more diffused. LD, on the other hand, has a precise wavelength and a smaller emission angle (around 20 degrees), allowing better penetration into the skin.

Now let's take a look at the working principle of the laser hair growth cap. According to the "Guidelines for Technical Review of Semiconductor Laser Treatment Devices (Class II)" issued by the State Drug Administration Center for Medical Device Evaluation, the working principle of laser treatment devices is that the semiconductor laser generates laser light through excitation from the power source. The laser light is effectively transmitted to the treatment area through a beam transmission device, providing therapeutic effects. The core component of the semiconductor laser treatment device is the semiconductor laser. Different types of doped semiconductor materials are used as the laser working substance. For example, by applying a forward voltage to the PN junction of the semiconductor laser, a particle number inversion of non-equilibrium carriers is formed between the conduction band and the valence band of the semiconductor material. When a large number of electrons and holes in the inverted state recombine, excess energy is released in the form of light.