Meet Our Experts: Kunal Malik, board-certified dermatologist in NYC, Viktoryia Kazlouskaya, board-certified dermatologist and founder of Dermatology Circleīoth are fine options-as long as you're selecting a broad-spectrum formula that's water-resistant and has an SPF 30 or higher, according to the American Academy of Dermatology Association-but physical sunscreens tend to be more suitable for those with sensitive skin. ![]() Nanoparticles first became available in sunscreens in the 1980s, but didnt really catch on until the 1990s. These ingredients are broken down into ultra-fine particles before being added to your sunscreen. Physical sunscreens, on the other hand, contain active ingredients like zinc oxide or titanium dioxide, and provide a barrier on the skin, working like a mirror to reflect the sun's harmful UV radiation, says Kunal Malik, a board certified dermatologist in NYC. Titanium dioxide (TiO 2) is one of the most important and effective sunscreens for protecting skin and has been safely used for decades. For sunscreen, the nanoparticles in question are zinc oxide and titanium dioxide. Chemical sunscreen, which contains active ingredients like oxybenzone and avobenzone, works like a sponge, absorbing the sun’s rays. There are two broad categories: chemical and physical. In mineral sunscreensalso known as physical sunscreensthese UV filters are tiny particles of the metals zinc oxide, titanium dioxide, and sometimes iron oxide. Is Titanium Dioxide safe for use in mineral makeup and Sunscreen The EPA states it is quite safe based on its final report. ![]() ![]() These sunscreens leave you exposed to skin-aging UVA rays. You already know sun protection is vital to help prevent both skin cancer and visible damage like discoloration and wrinkles, but did you know not all sunscreen is created equal? Why Use Titanium Dioxide Sunscreens Some chemical sunscreens only protect against long-wave UVB rays, the rays responsible for sunburn. If you’re opting for sunscreen for protection from overexposure to the sun, EWG advises to opt for mineral-based sunscreen products with zinc oxide or titanium dioxide active ingredients and avoid products with ingredients like oxybenzone and retinyl palmitate.
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