| 1. Identify the Intended Treatment | Confirm whether the device provides cleansing, light therapy, microcurrent, radiofrequency, exfoliation, or another function. | The product description should clearly state its technology, intended use, operating method, and treatment area. | Different technologies work through different mechanisms and are not interchangeable for every skin concern. | Vague claims such as “instant renewal” or promises to treat every skin problem without evidence. |
| 2. Verify Safety Features | Look for adjustable intensity, automatic shut-off, overheating protection, insulated housing, eye protection guidance, and clear operating instructions. | Safety controls should be described in the user manual, including recommended session duration and frequency. | Adjustable controls can help users start conservatively and reduce the risk of irritation, burns, or excessive exposure. | No manual, no exposure limits, exposed electrical parts, excessive heat, or a device that cannot be stopped quickly. |
| 3. Check Certifications and Regulatory Information | Review applicable electrical, electromagnetic compatibility, and market-specific regulatory documentation. | A valid conformity mark or registration should be traceable to the product model and supported by documentation. Certification requirements vary by country and device type. | Traceable compliance information provides evidence that the product has been assessed against relevant requirements. | Unverifiable logos, incorrect certification numbers, or claims that a general quality mark proves medical effectiveness. |
| 4. Match the Device to Your Skin Type | Assess whether the device is suitable for dry, oily, sensitive, acne-prone, reactive, or combination skin. | Sensitive or compromised skin generally requires lower intensity, shorter sessions, and avoidance of aggressive exfoliation or heat. | A device that is appropriate for one skin type may worsen redness, dryness, irritation, or inflammation in another. | The instructions do not mention sensitive skin, patch testing, or conditions requiring professional advice. |
| 5. Review Contraindications | Check warnings related to pregnancy, photosensitivity, active skin disease, open wounds, implanted electronic devices, recent procedures, and prescription medicines. | People using photosensitizing medicines or with an implanted electronic device should seek professional advice before using relevant technologies. | Certain energies, electrical currents, or active ingredients can create avoidable health risks for specific users. | The manufacturer provides no contraindications or says the device is safe for everyone without exceptions. |
| 6. Evaluate Ease of Cleaning and Maintenance | Inspect the materials, detachable parts, water resistance rating, charging method, and cleaning instructions. | Only use water or cleaning products specifically permitted in the manual. Water resistance does not always mean the device is safe to submerge. | Proper cleaning helps reduce buildup of oil, cosmetics, and microorganisms while protecting the device from damage. | Hard-to-clean seams, unclear sanitation instructions, damaged cables, or a charging port exposed to water. |
| 7. Compare Evidence, Warranty, and Support | Review independent evidence, return terms, warranty duration, replacement parts, customer support, and availability of the user manual. | Prefer claims supported by published testing or clearly described performance data. A warranty does not guarantee clinical effectiveness. | Reliable support and realistic evidence make it easier to use the device safely and judge whether it is suitable for your needs. | Only testimonials are provided, results are guaranteed, or warranty and return conditions are difficult to find. |