RF micro-needling, also known as radiofrequency micro-needling or fractional radiofrequency, is a cosmetic procedure that combines traditional micro-needling with the use of radiofrequency energy. It is a minimally invasive treatment designed to rejuvenate the skin, improve texture, and address various skin concerns. 

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During an RF micro-needling procedure, a device equipped with tiny needles is used to create micro-injuries in the skin. These needles penetrate the skin's surface, creating controlled channels. However, unlike traditional micro-needling, RF micro-needling also delivers radiofrequency energy into the deeper layers of the skin through these micro-channels. 

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The radiofrequency energy heats the underlying tissue, stimulating collagen production and remodelling. Collagen is a protein responsible for maintaining the skin's structure and elasticity. By inducing controlled thermal injury and collagen stimulation, RF micro-needling can help improve skin firmness, reduce wrinkles, minimize acne scars, and address other skin irregularities. 

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The combination of micro-needling and radiofrequency energy can provide more comprehensive and targeted results compared to traditional micro-needling alone. The procedure is often performed by a doctor or a trained skincare professional. 

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RF micro-needling is generally considered safe and can be used on various skin types and colors. However, as with any cosmetic procedure, there can be potential side effects such as redness, swelling, temporary bruising, or skin sensitivity immediately after treatment. It is important to consult with a qualified professional to determine if RF micro-needling is suitable for your specific skin concerns and to discuss the potential risks and benefits.