Hello Face 4D Red Light Therapy Mask by Dr. Pen Experience professional-grade light therapy at home. The Hello Face 4D LED mask features advanced facial contour technology, 311 high-density LED beads, and four targeted wavelengths — designed for visible skin rejuvenation with every session. 4D Contour Fit Design Engineered with 4D facial contour technology, this mask naturally adapts to your face shape for a secure, pressure-free fit. The curved ergonomic structure maximizes light coverage across all facial zones, while the ultra-lightweight design ensures comfortable, extended wear. Soft Silicone Construction Made from premium soft, odorless silicone that molds closely to facial contours — far more comfortable than rigid masks. Flexible enough to use sitting, reclining, or lying down. Features 32 micro-ventilation pores and a flower-shaped mouth opening for easy breathing during treatments. No Light Leakage & Eye Comfort The upgraded patented eye-shield design prevents light leakage and glare without applying pressure to the eyes. A wide adjustable Velcro strap made from soft, breathable fabric keeps the mask stable and secure — no ear discomfort, even during movement. 311 High-Density LED Beads Delivers uniform illumination from forehead to chin for enhanced skin rejuvenation. The high-density layout improves light penetration to target fine lines, uneven texture, and dullness. Powered by a 3000mAh rechargeable controller for multiple cordless sessions — perfect for home use or travel. 4 Wavelengths for Targeted Results Light Wavelength Benefit Blue 460nm Promotes clearer-looking skin Amber 605nm Soothes and refines texture Red + Infrared 630nm + 850nm Enhances firmness and vitality Mixed Mode All wavelengths Comprehensive rejuvenation Recommended Use 3–4 sessions per week, 15 minutes per treatment, for healthy-looking, radiant skin.