In my bathroom I replaced the large bulb that is turned when switching on the vent with this bulb from Amazon: https://www.amazon.com/gp/product/B07TDP67LR/ref=

In my bathroom I replaced the large bulb that is turned when switching on the vent with this bulb from Amazon: https://www.amazon.com/gp/product/B07TDP67LR/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1 https://www.amazon.com/gp/product/B07TDP67LR/ref=ppx_yo_dt_b... I use a small hand held concave vanity mirror and reflect the overhead light into my eyes. I wiggle the mirror handle to increase the spread. This is done while brushing my teeth since my electric toothbrush has a 3 minute timer. Ergonomic ? yes. Practical ? for me yes. Safe ? maybe given the persistence effect matches what the paper said should occur. The Oxford paper used a small handheld red LED flashlight purchased for around $10 with a paper diffuser. I didn't enjoy doing it that way and stopped after a few attempts.