As part of this rule, the FDA has asked industry and other interested parties for additional safety data on 12 active sunscreen ingredients currently available in marketed products. It’s a high priority for the FDA and we continue to work toward establishing final marketing requirements for sunscreens. Let’s take a look at the official FDA report. MATTA, PHD1 JEFFRY FLORIAN, PHD1 ROBBERT ZUSTERZEEL, MD, PHD, MPH1 ET ALĭespite the findings, while the FDA has not advised against the use of chemical sunscreens, choosing physical sunscreens may be a safer option for those who are concerned about the potential health risks associated with chemical ingredients. These findings do not indicate that individuals should refrain from the use of sunscreen. In this study conducted in a clinical pharmacology unit and examining sunscreen application among healthy participants, all 6 of the tested active ingredients administered in 4 different sunscreen formulations were systemically absorbed and had plasma concentrations that surpassed the FDA threshold for potentially waiving some of the additional safety studies for sunscreens. This is important information because it suggests that the effects of these sunscreen ingredients on the body may last longer than previously thought.
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The fact that the active ingredients were still detectable in the skin at days 7 and 14, and that they had a long terminal half-life (which means it takes a long time for the body to eliminate half of the amount of the ingredient), suggests that the absorption of these ingredients through the skin is the slowest step in the process of eliminating them from the body. For avobenzone, octisalate, and octinoxate, the levels were above 0.5 ng/mL in more than 50% of participants for up to 7 days, for octocrylene, it was 10 days, and for homosalate and oxybenzone, it was up to 21 days. It also means that after the participants applied the tested sunscreen products, the levels of the active ingredients in their bloodstream remained above 0.5 ng/mL for different lengths of time, depending on the specific ingredient. This means that these chemicals enter the bloodstream quickly after application. After just the first day of use, all six of these chemicals were detected in the bloodstream at levels above the safe limits set by the FDA. Blood samples were collected over 21 days from each participant. On day 1, they applied a single application of the sunscreen product, and on days 2 through 4, they applied the sunscreen product four times a day at 2-hour intervals.
Participants in this research study applied sunscreen for 4 days. Participants were randomized to 1 of 4 sunscreen products: either lotion, aerosol spray, nonaerosol spray, or pump spray. The study involved 48 healthy individuals, who were instructed to apply chemical sunscreens multiple times per day for four days. In 2020, a disturbing FDA research study that looked at the possible effects of chemical sunscreen ingredients on our bodies was released. Yes, Chemical Sunscreen Is Absorbed Into The Bloodstream These active ingredients include chemicals like: oxybenzone, avobenzone, octisalate, octocrylene, homosalate, and octinoxate. They do this by using a variety of active ingredients that absorb different wavelengths of UV radiation. These conventional sunscreens use what are known as UV absorbers and UV blockers to protect the skin from damaging ultraviolet rays.Ĭhemical sunscreens work by absorbing ultraviolet (UV) radiation from the sun and converting it into a small amount of heat, which is then dissipated from the skin. If you go to the drugstore and buy any of the inexpensive sunscreens on the shelf, chances are you’re buying a chemical sunscreen. Chemical Sunscreen Ingredients: The Lurking Danger Not only do these chemicals absorb into the bloodstream, but they’re also causing damage to our coral reefs and oceans.
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These sunscreens are often filled with nourishing, natural ingredients, free from harsh preservatives and synthetic fragrances, and are overall a much better choice for your clean skincare regimen.Ĭhemical sunscreens use UV absorbers like oxybenzone, avobenzone and octinoxate that absorb UVA and UVB radiation. We define “natural” sunscreen as a mineral (also known as physical) sunscreen that uses titanium dioxide and/or zinc oxide to physically deflect the sun’s rays. But if you have sensitive skin, want to avoid potentially-harmful chemicals, or want to protect our oceans, choosing a natural sunscreen is your best bet. Everyone knows how important it is to protect your skin with sunscreen.
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