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Optyl is a special type of plastic used to make high-quality eyeglass frames. It is a patented epoxy resin that is known for being incredibly lightweight and durable. What makes it unique is that it is a "thermosetting" plastic, which gives it a special "shape memory" that helps it hold its form over time.
read more about optyl frame material ...One of the biggest advantages of an Optyl frame is its comfort. The material is about 20% lighter than acetate, which is the most common plastic used for frames. This remarkable lightness means the glasses put very little pressure on your nose and ears, making them a pleasure to wear all day long. Optyl is also hypoallergenic, making it a great choice for people with sensitive skin.
Optyl has a unique property called shape memory. When an optician heats the frame to a specific temperature, it becomes flexible and can be adjusted for a perfect fit. As it cools, it sets in this new shape. If the frame is heated up again, however, it will automatically spring back to its original, factory-molded shape. This "memory" means your frames are very resistant to warping and will hold their custom fit very well.
It is helpful to know that Optyl is a thermosetting plastic. This means that once it is created and cured into its final shape, it becomes permanently set, like a baked cake. This is different from a "thermoplastic" like acetate, which can be softened and reshaped multiple times, like a block of chocolate. This thermosetting property is what gives Optyl its strength and stability.
A distinct advantage of Optyl over traditional acetate is its resistance to aging. Standard plastic frames can dry out, become brittle, or turn yellow after years of exposure to sweat and UV light. Optyl is chemically stable and does not contain plasticizers that evaporate. This means an Optyl frame will stay translucent and keep its original color vibrancy for many years without drying out or becoming opaque.
Yes. Because of their shape memory and thermosetting nature, Optyl frames are very strong and resistant to losing their shape. They hold their adjustments extremely well over time.
No. Adjusting an Optyl frame requires a special heating unit to reach the correct temperature. You should always have a skilled optician make any adjustments to avoid damaging the frame.
It is not always obvious just by looking. Often, the brand that uses the material (it was patented by the Safilo group) will be a clue. Your optician can tell you for sure what material a frame is made of.
If you are looking for a pair of glasses that is exceptionally lightweight and comfortable, ask your optician to show you some frames made from Optyl. It is a fantastic option for anyone who is sensitive to the weight of their glasses. Your optician can explain the benefits and use their expertise to adjust the frame for a perfect, long-lasting fit.
Optyl Material. Safilo Group. https://www.safilogroup.com/. Accessed April 7, 2026.
Hypoallergenic Eyeglass Frame Materials. All About Vision. https://www.allaboutvision.com/eyewear/eyeglasses/materials/. Accessed April 7, 2026.
Frame Materials and Properties. American Optometric Association. https://www.aoa.org/healthy-eyes/caring-for-your-eyes/eyeglass-basics. Accessed April 7, 2026.
Eyeglass Frame Materials Guide. EyeBuyDirect. https://www.eyebuydirect.com/guides/frame-materials. Accessed April 7, 2026.
Optyl Eyewear Material Overview. Optician Online. https://www.opticianonline.net/. Accessed April 7, 2026.