I. Applications and Market Prospects of LED Large‑Panel Beauty Devices
In recent years, the phototherapy skincare sector has continued to heat up. LED large‑panel beauty devices, with advantages such as non‑invasive operation and ease of use, have rapidly become a growth engine in the home beauty device market. In terms of operating principles, these products primarily use photobiomodulation therapy, achieving anti‑aging, acne treatment, and soothing effects through different wavelengths such as red light, blue light, and yellow light.
Market data confirms the strong momentum of this trend. According to U.S. research firm Future Market Insights, the global phototherapy market was valued at approximately USD 1.1 billion in 2025 and is projected to reach USD 1.7 billion by 2035, with a compound annual growth rate of 4.6%. Sales growth for LED beauty devices once reached as high as 1,619%, far exceeding other categories such as radiofrequency and laser. On social platforms, products such as large‑panel lights and LED masks continue to go viral, and “light therapy” before bed has become a new skincare standard for young consumers.
As the market expands rapidly, the problem of inconsistent product quality has gradually emerged. As electrical appliances that emit optical radiation directly onto human skin, the safety of LED large‑panel beauty devices is of paramount importance. IEC 60335‑1 and IEC 60335‑2‑27, as core safety standards published by the International Electrotechnical Commission, provide authoritative compliance bases for such products.
II. IEC 60335‑1 Testing Content for LED Large‑Panel Beauty Devices
IEC 60335‑1 is “Household and similar electrical appliances – Safety – Part 1: General requirements”, applicable to household and similar electrical appliances with rated voltages not exceeding 250 V for single‑phase and 480 V for other appliances. This standard comprehensively evaluates product safety performance from multiple dimensions including electrical, mechanical, thermal, fire, and radiation aspects.
Core test items mainly include:
Electrical safety testing: Covering insulation resistance, dielectric strength, leakage current, and earthing continuity, ensuring insulation performance under high voltage or abnormal current conditions.
Mechanical structure assessment: Testing enclosure strength, stability, protection of moving parts, and sharp edges of accessible parts.
Material heat resistance and fire performance: Verifying high‑temperature resistance of non‑metallic materials through glow‑wire tests, ball pressure tests, etc.
Abnormal condition simulation: Safety performance under fault conditions such as motor stall and component short circuits.
It is worth noting that the IEC 60335‑1:2020/A1:2025 amendment has updated the light source/luminaire standard, shifting from IEC 62471:2006 to IEC 62471‑7, and adding blue light hazard assessment requirements, with an assessment time of 10 seconds and an assessment distance of 200 mm. This has important implications for the optical radiation safety assessment of LED large‑panel beauty devices.
III. IEC 60335‑2‑27 Testing Content for LED Large‑Panel Beauty Devices
IEC 60335‑2‑27 is “Household and similar electrical appliances – Safety – Part 2‑27: Particular requirements for appliances for skin exposure to ultraviolet and infrared radiation”, and must be used in conjunction with IEC 60335‑1. This standard applies to appliances equipped with emitters for skin exposure to optical radiation (wavelength 100 nm to 1 mm), covering products such as LED phototherapy masks and large‑panel lights.
The testing content of this standard mainly covers the following dimensions:
Optical radiation safety testing is the core distinctive item, requiring measurement of ultraviolet (250‑400 nm) and infrared radiation irradiance to assess potential hazards to skin and eyes. Optical radiation measurement must be conducted using professional spectroradiometers under specific geometric conditions.
Electrical safety testing includes protection against electric shock, leakage current and electrical strength at operating temperature, dielectric strength testing, and earthing continuity testing.
Mechanical safety testing covers structural stability, mechanical strength, heat and fire resistance, and rust resistance.
Label and instruction review ensures compliance of product markings, warnings, and user manuals.
IV. Testing Process and Timeline
IEC 60335 testing for LED large‑panel beauty devices generally follows this process:
1. Requirements communication and plan confirmation – Clarify the product type, target market, and applicable standard version with the testing body.
2. Sample preparation and submission – The manufacturer provides complete samples and technical documentation such as user manuals, circuit diagrams, and key component lists.
3. Laboratory testing – The testing body conducts comprehensive testing of the samples in accordance with the standards.
4. Report issuance and review – After testing is completed, an official test report is issued, which must bear CMA, CNAS, or other accreditation marks to be legally valid.
Testing timeline: Standard testing typically takes 7 to 15 working days, depending on product complexity, standard version, and whether corrective actions and re‑testing are required. Some organisations offer expedited services that can complete testing within 3 working days (subject to sample conditions). It is recommended that manufacturers initiate pre‑testing during the product development phase to avoid delays in market launch due to non‑compliance.
V. Choosing a Testing Body and Shenzhen Zhongwei Inspection
Choosing a professional and reliable testing body is key to ensuring product compliance. It is recommended to prioritise third‑party testing bodies with CNAS and CMA accreditations to ensure internationally mutually recognised reports.
Shenzhen Zhongwei Inspection Technology Co., Ltd. (CTNT) is a professional optical beauty device testing and certification body, holding national third‑party testing laboratory accreditation and China National Accreditation for International Mutual Recognition. The company has many years of experience in optoelectronic product testing and certification, with outstanding strength in the optical beauty device testing field. It operates professional optical laboratories and beauty device laboratories, with services covering laser products, beauty instruments, and household appliances. From LED optical beauty devices to infrared optical beauty devices and laser beauty devices, Shenzhen Zhongwei Inspection provides professional safety testing services for beauty devices, with testing standards covering the IEC 60335 series. With high testing efficiency, short turnaround times, and professional reliability, it provides one‑stop testing and certification solutions for various light source beauty device products.
