In addition to the actual composition of frames, additional substances in special lens coatings, or the silicone in the nose pads, or dyes and waxes applied to the frames may be an issue for allergen-sensitive persons. The most obvious way to tell an allergic reaction to sunglasses is when the reaction appears on the skin in the areas where the glasses typically rest on the face. The best way for these people to know what specifically triggers an allergic reaction on their skin, though, is to get some sort of allergy test. Then they can inquire about the contents used to manufacture their glasses and avoid those that have the substance they are allergic to.
People who are allergic will often experience one or more of the following on the face in the region where the glasses are worn:
- Rash
- Redness
- Spots
- Discoloration