สำหรับครีมกันแดดควรเลือกแบบ reef safe ที่ใช้ non-nano Zinc Oxide และ non-nano Titanium Dioxide เป็นสารกันแดดหลัก รวมทั้งไม่มีส่วนประกอบอื่นที่เป็นขนาดนาโน What is Nano Zinc Oxide? Zinc oxide nanoparticle is a new type of multi-functional inorganic material, and its particle size is between 1 and 100 nm. Due to the refinement of grains, the surface electronic structure and crystal structure change, resulting in surface effect, volume effect, quantum size effect, macroscopic tunneling effect, high transparency, high dispersion and so on. There's more to consider than just the ingredients in your sunscreen, though, which is where things get a bit sticky: To be truly reef-safe, the particles in sunscreen must be "non-nano." Yes, you’re reading this correctly: Badger's new sunscreens are just as easy to apply as their non-nano sunscreen creams, provide the same excellent UVA/UVB protection, are moisturizing and fragrance-free, are water resistant for at least 40 minutes (SPF 30 Active) or 80 minutes (SPF 35 Sport) of swimming and/or sweating, are safe to use in marine ecosystems, and come with the added bonus The dermatologist-developed, vegan sunscreen is non-comedogenic and water-resistant for up to 80 minutes. The environmentally conscious brand uses non-nano zinc oxide in order to ensure that EWG’s Skin deep recommends zinc oxide 15-20% as an active ingredient in the sunscreen. Select 100% Non-Nano Particle Zinc Oxide. A sunscreen can be made with nano particles or non-nano particles. Nano particles are particles smaller than 100 nanometer and non-nano particles are particles bigger than 100 nanometer. Today, there are two more: FDA is posting the deemed final order for over-the-counter (OTC) sunscreens and is issuing a proposed order for sunscreens. Theresa M. Michele, M.D. In this CDER Sheer Zinc Sunscreen. SPF 30. Extra sensitive. Fragrence Free. $9 / 6 oz. Cola Mineral Sun Silk Creme. Non-nano Zinc with niacinamide. SPF 30. 70% organic. $42 / 1.5 oz. Love Sun Body. 100% naturally derived ingrediences including non-nano zinc and titanium oxide. SPF 50. Fragrence-Free.. $32 / Honest Mineral Sunscreen Spray. Non-nano Zinc .

nano vs non nano sunscreen