I purchased this on Amazon on February 11, 2026, but I no longer need it, so I am selling it. It is new and unused. The following is a quote from the seller: ✅【Fingerprint, scratch, and stain prevention】 Protects the surface of eyeglass lenses with a film, preventing dirt and oil from adhering to the lenses. It is also an innovative coating agent that can protect lenses from fine scratches. ✅【No need for eyeglass cleaner】 After coating, even if dirt adheres to the eyeglass lenses, you can easily clean them with just water, just like an eyeglass cleaner. A film is formed by a nano-polymer polymerization reaction, and the surface becomes hydrophilic, making it difficult for dirt to adhere and easy to remove. Dirt can be easily removed even with just an eyeglass wipe or cloth. ✅【Clear vision】 The coating effect reduces light refraction and scattering, resulting in a clearer view. It also cuts UV rays to protect the eyes and reduces eye fatigue. ✅【Antibacterial effect to prevent dirt and bacteria】 The surface is smoothed with a film to reduce the space for bacteria to enter, protecting against most bacteria. Also, it does not contain any organic solvents or detergents, and is safe with no effect on the human body even if touched directly. ✅【Effective duration】 The coating lasts for 3 months. It can be applied to eyeglasses about 20-30 times. By applying multiple coats, the durability is increased, and the eyeglass lenses are protected as if they were new. *It does not have an anti-fog effect for eyeglasses.