Does radio frequency (RF) technology really help reduce chin fat? It is indeed effective to some extent. RF technology emits one million high-frequency radio wave vibrations per second, penetrating the epidermis to reach the dermis, deeply heating collagen cells. This can stimulate collagen fiber growth, promote the production of new collagen, thereby supporting the skin and enhancing its firmness and elasticity. In comparison, HIFU is specifically designed for the face. HIFU technology delivers focused ultrasound energy deep into the SMAS layer (4.5 mm), stimulating collagen renewal, visibly lifting sagging skin, and sculpting the chin contour without surgery, pain, or recovery time.