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Home Life Style Beauty Tips Active Ingredients of Sunscreens Result in High Levels of Bloodstream: Study

Active Ingredients of Sunscreens Result in High Levels of Bloodstream: Study

However, the Personal Care Products Council trade association pointed out limitations of the study and expressed concern that it may confuse consumers

The active ingredients of commonly-used sunscreens end up in the bloodstream at much higher levels than current U.S. guidelines from health regulators and warrant further safety studies, according to a small study conducted by U.S. Food and Drug Administration researchers and published on Monday.

The over-the-counter products originally marketed to prevent sunburn with little regulation are widely used to block radiation from the sun that can cause skin cancer, the most common malignancy in the United States.

The study of 23 volunteers tested four sunscreens, including sprays, lotion and cream, applied to 75 percent of the body four times a day over four days, with blood tests to determine the maximum levels of certain chemicals absorbed into the bloodstream conducted over seven days.

sunscreen ingredients, sunscreen effects
The study findings raise many important questions about sunscreen and the process by which the sunscreen industry, clinicians, specialty organizations, and regulatory agencies evaluate the benefits and risks of this topical OTC medication. Pixabay

The study found maximum plasma levels of the chemicals it tested for — avobenzone, oxybenzone, octocrylene and in one sunscreen ecamsule — to be well above the level of 0.5 nanograms per milliliter (ng/mL) at which FDA guidelines call for further safety testing.

For example, the maximum concentration of avobenzone was found to be 4 ng/mL and 3.4 ng/mL for two different sprays, 4.3 ng/mL for a lotion and 1.8 ng/mL for the cream. Researchers did not name the products used in the study.

The effects of plasma concentrations exceeding the FDA’s limit is not known and needs to be further studied, the research team wrote in the Journal of the American Medical Association (JAMA). The results in no way suggest that people should stop using sunscreen to protect against the sun’s harmful ultraviolet (UV) rays, researchers said.

“The demonstration of systemic absorption well above the FDA guideline does not mean these ingredients are unsafe,” Dr. Robert Califf and Dr. Kanade Shinkai said in an editorial that accompanied the study in JAMA.

sunscreen ingredients, sunscreen effects
However, the Personal Care Products Council trade association pointed out limitations of the study and expressed concern that it may confuse consumers. Pixabay

“The study findings raise many important questions about sunscreen and the process by which the sunscreen industry, clinicians, specialty organizations, and regulatory agencies evaluate the benefits and risks of this topical OTC medication,” they added. David Andrews, a senior scientist at the nonprofit health and environmental advocacy group Environmental Working Group, called for thorough testing of sunscreen ingredients.

ALSO READ: Watching Children Tackle Climate Change Issues Could Influence Views of Parents, Scientists Say

“For years the sunscreen chemical manufactures have resisted common sense safety testing for their ingredients and now FDA is proposing that these common ingredients must undergo additional testing to stay on the market,” Andrews said.

However, the Personal Care Products Council trade association pointed out limitations of the study and expressed concern that it may confuse consumers. Sunscreens in the study were used at “twice the amount that would be applied in what the scientific community considers real-world conditions,” said Alexandra Kowcz, the group’s chief scientist. (VOA)

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