Electromagnetic waves with wavelengths between 100nm and 420nm are ultraviolet (UV) rays, of which 365nm UV rays are UVA rays and belong to the long-wave UV rays.

Characteristics of 365nm UV.

It can penetrate deep into the skin, but it is difficult to reach the subcutaneous tissue. It mainly acts in the junction of epidermis and dermis, and can stimulate collagen growth; it has a tanning effect on the skin, but not erythema and blisters. It can make the skin produce beautiful black, so it is often used in tanning salons. However, long-term exposure will also cause excessive darkening and aging of the skin; less damaging to the eyes, but long-term exposure may also lead to cataracts and other eye problems; has a certain degree of bactericidal effect, but the effect is weak. 365nm UV rays can kill part of the bacteria, molds and viruses, but can not effectively kill all pathogenic microorganisms; can enhance the synthesis of vitamin D, but the efficiency of the lower than the UVB wave band. Long-term or high-dose exposure may increase the risk of skin cancer, especially melanoma.

365nm long-wave ultraviolet radiation can darken the skin in the short term, stimulate collagen growth, and has a certain bactericidal effect. However, prolonged or high dose exposure will still cause skin damage and skin cancer risk, and sun protection measures should be taken. It is recommended that UV treatment be carried out under the guidance of a doctor and that regular skin examinations be carried out.

In daily life, it is best to have a small amount of exposure to natural light, sunscreen must be used when you go out, and avoid long periods of time in the sun and so on, while accumulating a large amount of long-wave and short-wave ultraviolet radiation. Moderate sun exposure is beneficial, while excessive sun exposure is harmful. Protect your skin and eye health!