The Radioactive Dentin Abrasiveness (RDA) scale is used by toothpaste brands to determine how abrasive or how soft their product is. Try to get anything below 80 RDA so you do not risk damaging your glasses even further.

After thinly spreading the toothpaste around, you can let it rest for a few minutes on your lenses. When they have hardened a bit, rinse them all off with a soft stream of water. Make sure to remove everything thoroughly because toothpaste can harm your eyes if you wear your glasses with residue still on them. Once you have removed all the toothpaste, wipe your glasses gently with microfiber again and check for scratches.

Try Using Sunscreen

For glasses with mirror coating, the sunscreen method is slightly more reliable than baking soda or toothpaste. This is assuming the scratch is only on the mirrored layer surface of your lens. If it is deep enough to cut into the plastic or glass, this method may not be too effective.

Furthermore, this also does not work as a spot treatment. The only way for this to work is by removing the entire layer of mirror coating, which is not exactly a good idea in the first place. However, desperate times require desperate measures, so with caution, we will teach you how to do it anyway.

Use sunscreen with SPF 45 for optimal results with this method. Rub the sunscreen on your lenses using a microfiber cloth. The fine aluminum powder in the sunscreen is meant to patch up the small scratches on your glasses. Spread the sunscreen thinly and let it sit for a few minutes. After that, you can wipe or wash it all off in the sink. Do this carefully to prevent scratching your lenses further.

After you have washed your glasses, wipe them clean with a microfiber cloth again. Check for any scratches and see if the method worked well. Remember to always be careful, especially with glasses that have UV protection or dark lenses as this method may end up damaging the coating instead. If the scratches are too minor and do not really hinder you from functioning properly, we suggest that you refrain from trying this method at all.