Summer’s just around the corner and with it, the need to slather on sunscreen to protect our skin from the sun's harmful UV rays. But with so many options on the market, it’s hard to know which sunscreen is the right one for you. Two popular types of sunscreen are those containing nanoparticles and those with chemical filters. Let's take a closer look at the differences between the two, using numbers and facts.
What are nanoparticles in sunscreen?
Nanoparticles are tiny particles that measure less than 100 nanometers in size. In sunscreens, nanoparticles are used to protect the skin from sun damage. When applied to the skin, these particles help to reflect or absorb harmful UV rays.
How do chemical sunscreens work?
Chemical sunscreens, on the other hand, work through the use of chemical filters. These filters help to reduce the amount of UV radiation that penetrates the skin by absorbing the rays and releasing the energy as heat.
Which is more effective?
Both types of sunscreens are effective in protecting the skin from UV radiation. However, studies have shown that nanoparticles may be more effective in protecting against UVA rays than chemical sunscreens.
Are nanoparticles safe?
There is still some debate about the safety of nanoparticles in sunscreens. Some studies have suggested that nanoparticles may penetrate the skin and potentially cause harm to the body. However, other studies have indicated that nanoparticles in sunscreens are safe to use.
What should you choose?
Ultimately, the decision of which type of sunscreen to use comes down to personal preference. If you are concerned about the potential risks associated with nanoparticles, you may want to choose a chemical sunscreen instead. However, if you are looking for maximum protection against UVA rays, a sunscreen containing nanoparticles may be the better option.
So there you have it, folks! A fact-based comparison of nanoparticles in sunscreens vs chemical sunscreens. Remember, whether you choose nanoparticles or chemical sunscreens, always make sure to reapply frequently, especially if you’re swimming or sweating.
References
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Diffey BL. Sunscreens with low UV-A absorption do not protect against visible light-induced erythema: a challenge for the future. Br J Dermatol. 2012 Mar;166(3):415-6. doi: 10.1111/j.1365-2133.2011.10647.x. Epub 2012 Feb 13. PMID: 22066575.
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European Commission. Scientific Committee on Consumer Safety. Opinion on Safety of Nanomaterials in Cosmetic Products. (2012).
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Gulson B, McCall M, Korsch M, Gomez L, Casey P, Oytam Y, Taylor A. Small amounts of zinc from zinc oxide particles in sunscreens applied outdoors are absorbed through human skin. Toxicol Sci. 2010;118(1):140-149. doi:10.1093/toxsci/kfq243.
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National Health Service. Sunscreen and sun safety. (2021).