Have you ever thought about the ethical and environmental issues around sunscreen?
Some products contain harmful substances or nanoparticles. For example, there is evidence that some chemicals used in sunscreen can cause coral bleaching. There are issues around the use of palm oil, microplastics, non-recyclable plastic bottles or tubes and the ethical stance of some of the large companies.
For more information and some suggestions for brands to try see: https://www.ethicalconsumer.org/health-beauty/shopping-guide/sunscreens