It's UV protection comes from non-nano zinc which won't be absorbed by the skin. It sits on the skin, doing its thing, reflecting back the nasty rays, protecting you.
This sunscreen came about when my daughter, a PADI scuba instructor, learned about the damage regular sunblock did to the ocean and its critters. "Mum," she said, "I need a safe sunscreen." It's been tested by her and few scuba nuts, by me scuba diving in Niue, and by some mums with their bubs. It has an estimated SPF of 40. Please reapply after swimming or sweating.
Please apply generously. Do a small patch test before using only this sunscreen.
Keep away from your eyes.
If you don't want to use this one, please find one that contains no oxybenzone. It kills coral reefs, poisons fish & sea turtles. Goodness knows what it does to our children.
From The Guardian (28 April, 2017): "Regional offices of the National Park Services, including in Hawaii, the Virgin Islands and south Florida, advise swimmers use sunscreens made with zinc oxide or titanium oxide, which biodegrade, and several Mexican preserves require visitors to use biodegradable sunscreens. Downs said that consumers should take extra care not to use sunscreens advertising “nano” zinc oxide or titanium oxide, saying that below 120 or just 100 nanometers is “significantly toxic”. (In other words non-nano zinc is what you're looking for.)
Ingredients: Certified organic Vitellaria paradoxa (shea) butter, Certified organic Theobroma grandiflorum (cupuacu) butter, Certified organic Theobroma cacao (cocoa) butter, Certified organic Mangifera indica (mango) butter, Certified organic Prunus armeniaca (apricot kernel) oil,Certified organic Cannibis sativa (hemp seed) oil, Certified organic Simmondsia chinensis (jojoba) oil, Expeller pressed refined Limnanthes alba (meadowfoam) oil, Non-nano zinc oxide (25%), Lavandula angustifolia essential oil.
*Please note that all balms, salves, & creams are packaged in glass or stainless steel containers. We do not use aluminium pottles, even though it would be really cool. Aluminium is a metal linked to Alzheimer's disease, dementia, & early osteoporosis, just to name a few. It loves to settle in the myelin sheaths which surround nerve tissues and in the fatty tissue inside bones. So, apologies, no metal containers & no plastic ones, either. Plastic chemicals are linked to autoimmune diseases, endocrine dysfunction, and some cancers. Since aluminium containers are lined in plastic, well, you get the drift.