LED Photobiomodulation Non-ionizing visible or near-infrared light | Supportive care for the appearance of fine lines, redness, and uneven skin tone; commonly used in professional and home-care devices. | Eye exposure, photosensitivity reactions, excessive heat, and possible interaction with photosensitizing medicines. Blue-light exposure requires additional eye and skin assessment. | IEC 60601-1 may apply to medical electrical equipment; IEC 60601-1-2 addresses electromagnetic compatibility; IEC 60601-2-57 covers certain non-laser light-source equipment; IEC 62471 is used for photobiological safety assessment; ISO 14971 supports risk management. | Clean the contact surface after each user where applicable; inspect LEDs, cables, ventilation openings, and protective eyewear regularly. Verify irradiance and treatment timer performance according to the instructions for use. | Strong overall balance Generally low consumable cost and broad usability when exposure limits, eye protection, and intended-use claims are properly controlled. |
Radiofrequency (RF) Controlled electrical energy producing tissue heating | Temporary improvement in the appearance of skin firmness and texture through controlled heating. | Burns, excessive heating, pain, uneven energy delivery, and interference with implanted electronic devices. Conductive gel or a suitable coupling medium may be required. | IEC 60601-1, IEC 60601-1-2, and ISO 14971 may apply depending on product classification and intended use. Electrical insulation, leakage current, temperature control, and electromagnetic compatibility should be documented. | Disinfect the applicator after each treatment; check electrode surfaces, cables, cooling systems, temperature sensors, and energy output. Replace damaged applicators or worn cables immediately. | Effective but operator-dependent Suitable for trained users who can control skin temperature, contact pressure, treatment duration, and contraindications. |
Intense Pulsed Light (IPL) Broad-spectrum pulsed light | Hair reduction and selected appearance-related pigmentation or vascular concerns, subject to local authorization and user qualification. | Burns, blistering, pigmentary changes, eye injury, and paradoxical hair growth in some situations. Risk varies with skin tone, tanning, fluence, pulse duration, and cooling. | IEC 60601-1 and IEC 60601-1-2 may apply; IEC 60601-2-57 is relevant to certain non-laser light-source equipment. ISO 14971 supports risk management. Local rules may classify IPL as a medical device or regulated aesthetic device. | Clean the light window after every session; inspect filters, cooling channels, handpieces, cables, and protective eyewear. Confirm pulse output, cooling performance, and lamp or flash-module service status at scheduled intervals. | High performance, higher compliance burden Requires stronger training, documentation, skin assessment, eye protection, and jurisdiction-specific regulatory review. |
Microcurrent Low-level electrical current | Temporary cosmetic improvement in the appearance of facial tone and firmness; often used with a conductive medium. | Skin irritation, discomfort, electrical shock, and potential interference with implanted electronic devices. Avoid use over broken skin unless the product is specifically authorized for that purpose. | IEC 60601-1 and IEC 60601-1-2 may apply when the device falls within medical electrical equipment requirements. ISO 14971 and electrical safety testing should support the intended use and risk profile. | Disinfect conductive probes after each use; inspect electrode coatings, charging ports, cables, and current-output consistency. Use only compatible conductive products and keep rechargeable batteries within their specified service conditions. | Portable and cost-efficient Attractive for mobile or home-use channels, but product claims and electrical protections must be clearly documented. |
Ultrasound Mechanical acoustic energy | Cosmetic product infusion support, cleansing procedures, and appearance-related skin treatments, depending on frequency and output. | Local heating, discomfort, irritation, and tissue effects if output is excessive or the applicator remains stationary. Avoid use over areas where ultrasound is contraindicated. | IEC 60601-1 and IEC 60601-1-2 may apply to medical electrical equipment. ISO 14971 supports risk management. Output frequency, intensity, duty cycle, contact detection, and treatment timer should be verified. | Remove gel or residue after each use; disinfect the applicator according to material compatibility. Inspect the treatment head, cable, seals, and output consistency; do not immerse non-waterproof components. | Moderate maintenance demand Practical for professional settings when contact, movement, coupling medium, and output controls are well managed. |