There are two forms of sun protection out there – physical and chemical. Physical sunscreens are formed with millions of particles that act like tiny mirrors to deflect the sun off of your skin. Chemical sunscreens create a process in which the energy that comes from the light gets turned into heat. This not only sounds dodgy but is also terrible for skin inflammations (acne, rosacea, eczema etc.) and for our ecosystems. The physical sunscreens are the way to go but unfortunately many formulas use the nanoparticle version of the minerals because it creates more protection and doesn’t whiten the skin. There just isn’t enough data available to determine its safety and I have read negative reports of what it does to our water systems. Nanoparticles do not have to be labelled so make sure that it is indicated as non-nano.
- Octinoxate: estrogenic effects and disruption of thyroid
- Homosalate: endocrine disruptor, forms toxic metabolites
- Oxybenzone: creates outbreaks of viral infection in coral reefs, endocrine disruption, easily absorbs into skin adding to bioaccumulation in our bodies
- Zinc Oxide (non-nano)
- Titanium Oxide (non-nano)