4.8 to 5 stars: These are the best sunscreens we tested. We recommend them without reservation. 4.5 to 4.7 stars: These sunscreens are excellent—they might have minor flaws, but we still recommend them. 4.0 to 4.5 stars: We think these are great sunscreens, but others are better. “Nano vs Non-nano zinc refers to the particle size of the Zinc Oxide. Zinc Oxide is the filter that blocks against ultraviolet light A and B. I prefer non-nano zinc particles. There have been some studies that have suggested that nano particles can be absorbed into the body.” DR NAANA BOAKYE, MD, Bergen Dermatology
For the intense sun you get while surfing, I recommend non nano zinc. What I’m Using. Right now I’m very happy with Amavara sunscreen (thank you to the young man at Mitch’s in Solana Beach for recommending this one) which has a whopping 19% zinc for their 30 SPF formula, and 22.5% for their 50 SPF formula. They make it in clear/white and
I believe the Elta MD sunscreens (some of which are physical-only, and some are physical+chemical), which are popular on this sub, use the nano/micro zinc oxide and have little or no white cast at least according to many of the reviews here. I've used Cotz Sensitive (and also Cotz Pediatric) in the past; it's a zinc oxide-only sunscreen with
Your best options for choosing a reef-safe sunscreen. Finding a truly reef-safe sunscreen is difficult, but there are a few guidelines to go by: Uses non-nano zinc oxide or titanium dioxide. Generally, sunscreens that use these two main active ingredients are considered to be reef-safe.
Ludwigshafen, Germany – May 2, 2016 – BASF welcomes the official entry of zinc oxide into Annex VI of the EU Cosmetics Regulation. Zinc oxide – in both its nano and non-nano form – is now approved for use as a UV filter in cosmetics in Europe. “UV radiation is responsible for various physiological effects in the skin. These include sunburn, premature appearance of wrinkles and
Some sunscreens will say “non-nano” on the label. Choose those, and if the label doesn’t specify if titanium dioxide is nanoparticle size, call or email the company and ask the particle size of the active sunscreen ingredient. The patent AU2021104084A4 presents a patent for a lignin-based nano-film that possesses sunscreen and antibacterial properties, along with a detailed method for its preparation. The nano-film is fabricated using lignin, a key component derived from biomass, which undergoes a self-crosslinking reaction facilitated by a crosslinking agent. This in turn could increase the risk of skin cancer. Ma also found that the longer zinc oxide is exposed to sunlight, the greater the potential damage to human cells. "Zinc oxide may generate free GmSLVd.
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    • nano vs non nano sunscreen