The Energy measurement of IPL Hair Removal Device

Intense pulsed light (IPL), also known as pulsed strong light, is a broad-spectrum light formed by focusing and filtering a high-intensity light source. Its essence is incoherent ordinary light rather than laser. The wavelength of IPL is mostly between 500-1200nm. IPL is one of the most widely used phototherapy techniques in clinical practice and plays a very important role in the field of skin beauty. So, how to accurately measure IPL light requires an energy meter specifically designed for measuring IPL.

The total energy of the hair removal machine refers to the total energy of the IPL strong pulse light emitted by the hair removal device through the lamp tube. According to relevant literature from the US FDA, the minimum energy density required for a home hair removal device to achieve hair removal effect is 5J/cm ². The cross-sectional area of the reference luminous tube is 3.3cm ², which is equivalent to a minimum total energy of approximately 16.5J for hair removal effect.

The relationship between energy density and hair removal effect

Low energy (3 to 5 J/cm ²): mainly targeting fine, soft, and light colored hair, slowing down hair growth rate through mild thermal effects. Common risks such as allergies may occur

Medium energy (5 to 10 J/cm ²): It can more effectively destroy hair follicles and has a good effect on various types of hair. There may be common risks such as mild redness, burning sensation, and temporary pigmentation on the skin

High energy (10 to 20J/cm ²): can act more deeply on the root of hair follicles, improving coarse, hard, and dark hair. Common risks such as skin burns, blisters, and pain may occur

Super Energy (20 to 30J/cm ²): Suitable for professional medical beauty institutions, it can damage hair follicles. There may be common risks such as severe skin burns and scar formation

Energy requirements for different types of hair removal devices

Household hair removal device: It usually requires an energy density of 16J or more to effectively remove hair. The specific energy settings should be adjusted according to individual skin type and hair condition

Hair removal devices used by professional medical beauty institutions: with higher energy density, usually between 20 and 30J/cm ², suitable for coarse, hard, and dark hair, but need to be operated by professionals