Also known as a thermoelectric cooler, in a laser hair removal handpiece serves to manage and dissipate heat generated during the treatment. Here are the primary functions:

1. Cooling the Skin: The Peltier device helps cool the surface of the skin, making the laser treatment more comfortable for the patient by reducing the sensation of heat and potential pain.
2. Protecting the Skin: By maintaining a cooler temperature, the Peltier device helps protect the epidermis from thermal damage, ensuring that the laser energy is effectively directed towards the hair follicles without causing harm to the surrounding skin.
3. Enhancing Performance: Proper cooling allows for higher laser energy settings, improving the efficacy of the hair removal treatment by enabling deeper penetration and more effective targeting of hair follicles.
4. Prolonging Device Life: Effective heat management helps to extend the lifespan of the laser handpiece by preventing overheating and reducing wear and tear on the components

Brands:

1- Cutera excel HR

2- DEKA