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 The issue of the difference between physical and chemical sunscreen damage was and still   is a matter of debate regarding the best time to use it, its damage, and its effectiveness.

Physical sunscreens   stay on the surface of the skin to reflect UV rays  through  the minerals that make up the sunscreen, which is why they are also referred to as mineral sunscreens .

 As for   chemical  sunscreens , they are absorbed by the skin  , converting UV rays into heat, which is then released by the skin (the basic process here is “absorption”), and this is the origin of the controversy. For years, some skin experts have warned against using chemical sunscreens, because they contain chemicals Harmful substances can be absorbed by the skin and then find their way into  the body .

A  study , published in the Journal of the American Medical Association, attempts to discover whether or not the active ingredients in 4 chemical sunscreens are absorbed into  the participants' "systemic circulation ."

 What they found was that the chemical components of the sunscreen were absorbed into the participants' skin in concentrations that required stopping action, which is extremely concerning.

The concentration of sunscreens rises in the blood

The results showed that the concentration of three of the four components continued to rise daily in  the blood , and remained in the blood for at least 24 hours after the last use.

The chemical ingredients tested were avobenzone, oxybenzone, eccamsol, octocrylene - and interestingly, the body absorbed 50 to 100 times more oxybenzone than other chemicals.

"Using sunscreens has the benefit of protecting  the skin  from  skin cancer  and premature aging , and if anyone is worried about using chemical sunscreens, mineral options that contain zinc oxide alone or in combination with titanium dioxide are great," Nussbaum adds.

And she says that with the damage to using sunscreen, the damage from ultraviolet radiation far outweighs that damage.

“The idea that some active ingredients are absorbed into the skin should prompt sunscreen makers to make improvements in these formulations,” says dermatologist Rita Linkner of Spring Street Dermatology Clinic. However, as a dermatologist, it's important to remember that the sun is the real enemy. Skin cancer is the most common type  of cancer  , and skin cancer is one of the deadliest diseases, especially among young people.”

An easy way to avoid the potentially harmful absorption of chemical sunscreens, while also protecting your skin, is to opt for mineral sunscreens like Colorcience Sunforgettable Total Protection SPF50 ($39) and Alastin Hydratint SPF 36 ($55).

Sunscreens and plasmas

The study relied on measuring plasma concentration and focused on people who used sunscreens heavily, not as much as normal people.

“In this preliminary study of high levels of sunscreen use, which was applied to 75% of the body, low levels of chemical filter filters were absorbed,” said Dr. Joshua Zeichner, director of cosmetic research in the department of dermatology at Mount Sinai Hospital in New York. from the sun through the skin.

However, in reality, consumers do not apply all this amount of sunscreen, and they reapply it to the skin every two hours. So, it is unclear whether or not there is absorption occurring in the case of everyday consumers.”

Dr. Marnie Nussbaum, a dermatologist from New York, agrees, saying that the results of this study do not mean that sunscreen should be avoided. Its main purpose was to find out if these products come too close to the blood, which would require further safety testing by the FDA.