Sunscreen may not be Effective, Could be Harmful: Says Study

A research study has found that sunscreens may not be effective and could be harmful for the skin.

A new research study headed by Dr. Aurora Ginzburg has found that in some combinations, sunscreens may potentially develop dangerous byproducts. The study published in the journal Photochemical and Photobiological Sciences, has found that humans need to avoid using some sunscreens.

The study has concluded that some sunscreens contains zinc oxide which lose much of their efficacy after two hours in the sun, they may become hazardous if combined with other chemicals present in most sunscreens. Researchers claim that Zinc oxide is used beneath or on top of other organic sunscreens and it does not filter as much UV radiation from the sun as either product alone.

The research team was headed by Dr. Aurora Ginzburg, which comprised College of Agriculture Sciences faculty Robyn Tanguay and Lisa Truong, as well as graduate fellow Claudia Santillan. In order to examine the impact of zinc oxide-based sunscreens the researchers used zebrafish. Zebrafish and human beings share around 80% of the genetic code, if a chemical creates unpleasant reaction in the fish, there’s a strong possibility it will induce comparable reactions in humans.

To study the impact of Zinc Oxide, the researchers developed five combinations including the active components found in sunscreen and other lotions containing various levels of zinc oxide and subjected them to UV radiation to notice the changes.

The chemicals were found to be hazardous after only two hours of sun exposure, according to the researchers. When sunscreen becomes harmful to the skin, it exposes customers to more radiation. This can eventually lead to sunburn, blisters, or sun poisoning.