A collagen gun delivers heat into the dermis via high-frequency radio waves, stimulating collagen production to achieve firming, lifting and softening of fine lines.

A collagen gun is a non-invasive aesthetic device that delivers heat into the dermis via high-frequency radio waves, stimulating collagen production to achieve firming, lifting and softening of fine lines. Designs include handheld and portable units; common brands include BTL Exilis 360 and others, and they may be used on areas that age easily, such as the face and neck.
Through high-frequency radio waves or monopolar radiofrequency energy, heat is delivered into the dermis and held at about 39–42°C for at least 4 minutes, promoting fibroblast proliferation and the generation of new collagen, improving elasticity, tightening contours and softening fine lines. It also supports vascular circulation and skin metabolism. Most collagen guns come with different tips, so energy output range and depth can be adjusted according to facial contour and skin thickness.