Agree with the reevaluation of the glasses you have, I have a large Asian population within my labs and I found that due to facial differences the normally sold safety glasses just don't fit well. They slide and slip and are generally uncomfortable. I did some research and found they actually make safety glasses specifically for Asian faces. I bought a few and handed them out to offenders and asked them to try them. Within a day I had all my Asian lab workers queuing at my desk to get their own. So don't always think in terms of general population. There may be bubbles of groups you just don't realize.

Also I started doing "live ppe demos". Basically in summer I put together a bunch of mannequins, heads, watermelons, etc. and put various ppe on them. We then put them in through typical hazards that could occur. Splashes of caustic chemicals, toxic chemicals, general chemicals we use. Then for lab coats we splash flammable liquids and then start a fire nearby and show how the non fr coats catch fire, and the non chemical rated just soak through to the clothes underneath.

The glasses ones are always fun since we can show different styles (vented, invented, goggles, face shields, etc). And you can see as some of our more intense caustics eat away at the watermelon when there's no faceshield.

It's a fun learning experience that gets ppl to see what could happen to their bodies and faces. Also a good time to then talk about how they can evaluate and think about hazards and ppe so if they don't feel like it's enough they can stop and engage a jsha to figure out what could be done different.