The main differences between red light hair growth devices and laser hair growth devices are reflected in the following aspects:

1. Light source type: The red light hair growth device uses an LED light source, while the laser hair growth device uses a laser head. LED emits ordinary light, while laser light is produced by stimulated radiation of atoms of matter.

2. Properties of light: Ordinary light (red light) is produced by spontaneous radiation of material atoms, while laser light is the light emitted when atoms at a high energy level are excited by external photons and jump to a low energy level, which is called induced radiation. Laser has the advantages of high directivity, high brightness, and high monochromaticity.

3. Basis for treatment effect: The use of laser for hair growth has medical basis and experimental support. For example, the "Chinese Treatment Guidelines for Androgenic Alopecia" recommends LLLT (low-energy laser therapy). Although the red light hair growth device may have similar effects, there is no relatively authoritative paper or experimental evidence.

4. Cost: The cost of laser head is much higher than that of LED.

Specific to the hair growth effect, both are designed to promote scalp blood circulation and hair follicle nutrient absorption, thereby preventing hair loss and promoting hair growth. However, through its core technology LLLT low-energy laser, the laser hair growth instrument uses 655nm wavelength red light to activate hair follicle vitality, accelerate scalp blood circulation and hair follicle nutrient absorption, while reducing the effect of DHT (dihydrotestosterone) on hair follicles and promoting ATP (adenosine triphosphate) substances are released normally, further promoting hair growth.

The role of laser hair growth instruments in promoting hair growth is mainly reflected in the following aspects:

1. Increase blood circulation: The laser hair growth instrument promotes tissue metabolism by increasing the activity of adenosine triphosphate (ATP) in the subcutaneous tissue, helping to improve the blood circulation of the scalp, allowing oxygen and nutrients to be more effectively transported to the hair follicles, and providing better hair growth. environment of.

2. Activate hair follicle vitality: The core technology of the laser hair growth instrument is LLLT (low-energy laser), which uses red light of a specific wavelength (such as 655nm) to activate hair follicle vitality, thereby accelerating the hair growth cycle and hair growth speed.

3. Regulate oil secretion: The laser hair growth instrument can effectively stimulate hair follicles and regulate oil secretion in the scalp, helping to reduce hair loss and accelerate hair growth.

4. Enhance hair strength and elasticity: Through laser irradiation, the strength, density and elasticity of the hair itself can also be enhanced.

According to scientific research and clinical data, laser hair restoration can increase hair density by 40-60%, and the success rate of stopping hair loss reaches 85%. However, it should be pointed out that everyone’s situation is different, and the effects of laser hair restoration may vary depending on individual differences.

Laser hair growth instruments are suitable for a variety of hair loss conditions, such as alopecia areata, postpartum hair loss, telogen effluvium, etc. It can also be used to delay the process of mild hair loss and maintain the health of original hair after hair transplantation2. However, please note that in cases of severe hair loss or complete damage to the hair follicles, the effectiveness of the laser hair restoration device may be limited.

Before using a laser hair growth device, it is recommended to consult a professional doctor or dermatologist to understand the cause of your own hair problems to determine whether you are suitable for laser hair growth treatment. At the same time, when using the laser hair growth device, you should follow the instructions and precautions in the manual, and maintain good work and rest and eating habits to obtain the best results.

The severity of hair loss is usually classified according to the Hamilton classification system, which divides hair loss into seven grades, as follows:

Regarding the choice of using a laser hair growth cap, the relationship between the number of lamp beads (such as 72 red light + 110 laser, 94 laser, 108 laser, 208 laser) and the level of hair loss does not directly correspond, but you can choose a suitable one according to the degree of hair loss. device of.

1. For mild hair loss of grades one to three, since the hair follicles have not yet been necrotic or closed, laser hair growth caps may have a certain effect in treating hair loss. At this time, choosing a hair growth cap with 72 red light + 110 laser or 94 laser may be enough to meet the needs.

2. For grade four to grade six hair loss, due to the larger hair loss area, a hair growth cap with higher power or more lamp beads may be needed to cover a wider scalp area. Therefore, a hair growth cap with 108 lasers or 208 lasers may be more suitable.

3. For extremely severe hair loss of grade seven, since the hair loss is already very serious, the laser hair growth cap may have limited effect. At this time, you may also need to consider hair growth hormone, hair growth cream, etc. for comprehensive treatment.