Which type of cooling is applied just before a laser pulse?

The application of cryogen spray just before a laser pulse serves an important purpose in laser treatments, particularly in cosmetic and medical laser procedures. Cryogen spray acts as a cooling mechanism that rapidly cools the skin surface, which helps to protect the epidermis from the thermal effects of the laser. This pre-cooling strategy minimizes discomfort and reduces the risk of skin damage, making the laser treatment safer and more effective.

By using cryogen spray, practitioners can ensure that the target tissue absorbs the laser energy effectively while simultaneously cooling the surrounding tissues. This is crucial for achieving optimal outcomes in procedures like hair removal, tattoo removal, and skin resurfacing.

Other cooling methods may not provide the immediate and intense cooling effect that cryogen spray offers, which is specifically designed for rapid application right before the laser emission. This immediate cooling response is essential in mitigating adverse effects during and after the procedure.