Beauty filters are key components in optical beauty devices, achieving safe and effective cosmetic treatment results by selectively transmitting specific wavelengths of light and filtering out stray light. Their core functions include:

• Spectral Filtering: Blocking harmful light such as ultraviolet rays (e.g., 100% filtering of UV light) while transmitting useful light in the 400–1200 nm range, precisely matching the treatment needs of IPL (Intense Pulsed Light), laser, and other light sources.
• Safety Protection: Filtering out stray light to prevent skin damage while ensuring that the treatment light acts stably on the target tissue.
• Functional Adaptation: Customizing wavelength bands according to different beauty needs (such as hair removal, skin rejuvenation, spot removal, etc.) to achieve specific treatment effects in coordination with the light source.

Application Areas and Typical Scenarios of Beauty Filters

Core Application Areas

Beauty filters are widely used in various types of optical beauty devices, with specific scenarios including:

• Hair Removal and Skin Rejuvenation: In ice-cooled hair removal devices and photorejuvenation devices (such as M22 Ultra Pulse Light), IPL filters transmit specific wavelengths of light to act on hair follicles or the dermis, achieving effects such as hair removal and stimulating collagen production.
• Skin Treatment: Used for treating vascular diseases and pigmentation issues (such as spot removal and reducing redness), beauty filters precisely control the depth of light action to improve microcirculation and break down pigments.
• Multifunctional Beauty Devices: In E-light and laser beauty devices, combined with intense pulsed light or infrared light, they achieve comprehensive effects such as acne removal, tattoo removal, and skin texture improvement.