<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Proper sun protection plays a key role in protecting against the harmful effects of UV radiation from the sun. Using sunscreen products protects the skin from sunburn, prevents it from ageing and reduces the risk of skin cancer. The aim of this research is to measure the sun protection factor (SPF) of commercially available products and compare it with the SPF value on the packaging. We also looked at whether the ratio and combination of sunscreen ingredients affect the effectiveness of the product. The SPF values of eight sun-screen products were tested. The value was determined using an in vitro method based on absorbance measurements with a UV spectrophotometer. Based on the results obtained, the actual SPF values of the products were calculated using Mansur’s formula. The SPF values we determined differed by 46.82% on average from the values indicated on the packaging of the sunscreen products. For those products where the SPF value on the packaging was higher (SPF 50), a larger deviation from the measured values was observed, but some deviation was observed for all products tested. However, the combination and proportion of substances in the products did not influence the differences obtained.</p>
</abstract>

Proper sun protection plays a key role in protecting against the harmful effects of UV radiation from the sun. Using sunscreen products protects the skin from sunburn, prevents it from ageing and reduces the risk of skin cancer. The aim of this research is to measure the sun protection factor (SPF) of commercially available products and compare it with the SPF value on the packaging. We also looked at whether the ratio and combination of sunscreen ingredients affect the effectiveness of the product. The SPF values of eight sun-screen products were tested. The value was determined using an in vitro method based on absorbance measurements with a UV spectrophotometer. Based on the results obtained, the actual SPF values of the products were calculated using Mansur’s formula. The SPF values we determined differed by 46.82% on average from the values indicated on the packaging of the sunscreen products. For those products where the SPF value on the packaging was higher (SPF 50), a larger deviation from the measured values was observed, but some deviation was observed for all products tested. However, the combination and proportion of substances in the products did not influence the differences obtained.

Determination of the sun protection factor of sunscreens

George Emil Palade University of Medicine

Bulletin of Medical Sciences

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Determination of the sun protection factor of sunscreens"}

Proper sun protection plays a key role in protecting against the harmful effects of UV radiation from the sun. Using sunscreen products protects the skin from...

Determination of the sun protection factor of sunscreens

Published Online: Aug 31, 2023

Page range: 64 - 77

DOI: https://doi.org/10.2478/orvtudert-2022-0004

Keywords
sun protection factor, sunscreen, UV spectrophotometry

© 2023 Kinda Andrea et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Determination of the sun protection factor of sunscreens

Published Online: Aug 31, 2023

Page range: 64 - 77

DOI: https://doi.org/10.2478/orvtudert-2022-0004

Keywordssun protection factor, sunscreen, UV spectrophotometry

© 2023 Kinda Andrea et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
sun protection factor, sunscreen, UV spectrophotometry