Thank you for your questions! **1. Is it safe for the neck?** Yes, this device is designed for use on the face, neck, and body when used as directed. Start at a low intensity and avoid direct exposure to the eyes. **2. Where can I get eye protection?** One pair of protective goggles is included in the package. Additional eye protectors are available in our [Accessories](https://www.freyara.com/accessories) section. **3. Does it help with collagen, wrinkles, and skin glow?** Yes! The 630nm red light and 850nm near-infrared light may help support collagen production, improve the appearance of fine lines and wrinkles, and promote smoother, healthier-looking skin with consistent use. **4. Can it help with shoulder, back, and knee pain?** Red and near-infrared light therapy may help relieve mild muscle soreness and discomfort in these areas. However, results vary, and it is not a substitute for medical treatment of persistent joint or back pain. We hope this helps!