Stretchable Electronic Facial Masks for Radiofrequency Therapy

Abstract Acne, the most prevalent chronic inflammatory skin condition, significantly impacts patients’ quality of life and mental health. Radiofrequency (RF) therapy offers a deep heating effect, devoid of antibiotic resistance, and side effects in pharmacological treatments, while avoiding the skin‐type limitations in phototherapy. However, conventional RF devices face challenges associated with long‐time hand‐held use and short effective treatment‐duration due to small sizes and continuous movement of the probe. Consequently, the stretchable electronic facial mask for radiofrequency therapy (SEFM‐RFT) is presented for large‐area treatment and hands‐free operation. A radiofrequency‐array heating model is proposed to ensure the therapeutic efficacy and safety, and an adsorption hot‐pressing packaging technique is developed to maintain close skin contact. Animal experiments demonstrate that SEFM‐RFT reduces the number of lesions by 78%, while the effect on acne recovery is proved through bacterial and histochemical experiments. The development of SEFM‐RFT represents a significant advancement in flexible electrical therapy devices.