The SPF on your sunscreen is WRONG! Here's how to measure it
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- Опубликовано: 21 окт 2024
- Are you really protected from the sun when wearing sunscreen?
In this video we accurately describe the method of measuring SPF and shed light on how to properly use sunscreen.
Disclaimer:
In this video, we have independently tested and measured the effectiveness of Garnier without any sponsorship or financial support from the company. The opinions and results presented in this video are solely based on our own research and analysis.
It's important to note that while we strive to provide accurate and unbiased information, individual experiences with sunscreen may vary. Sunscreen effectiveness can depend on factors such as skin type, application method, and environmental conditions.
This video is intended to serve as an informative and educational resource to help you make informed decisions about sunscreen. Always remember to consult with a healthcare professional or dermatologist for personalized skincare advice and product recommendations.
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References:
Chai, X. S.; Schork, F. J.; Oliver, E. M. (2006): ATR-UV monitoring of methyl methacrylate miniemulsion polymerization for determination of monomer conversion. In J. Appl. Polym. Sci. 99 (4), pp. 1471-1475. DOI: 10.1002/app.22658.
Fonseca AP; Rafaela N: Determination of Sun Protection Factor by UV-Vis Spectrophotometry, pp. 1-4. DOI: 10.4172/2375-4273.1000108.
Maria Zarkogianni, Nikolaos Nikolaidis (2016): Determination of Sun Protection Factor (SPF) and Stability of Oil-in-Water Emulsions Containing Greek Red Saffron (Crocus Sativus L.) as a Main Antisolar Agent. In International Journal of Advanced Research in Chemical Science 3 (7). DOI: 10.20431/2349-0403.0307001.
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Special thanks to the IFKB team at the University of Stuttgart for their trust and cooperation.
IFKB website: www.ifkb.uni-s...
Written and produced by M.Sc. Wadih Yared
Edited by Louis Kouschnir
Hi Dr. Yared! PhD sunscreen researcher and cosmetic chemist here--in vitro methods for measuring SPF are unfortunately not as reliable as in vivo. Companies are not allowed to put a product on the shelf if it does not match the advertised SPF. Additionally, updated in vitro methods such as using a Labsphere are a bit more accurate as they allow a film to form on a substrate which also largely contributes to a product's SPF rather than diluting the sample. Either way, this was a helpful video for those wanting to learn the methodology of using a UV-Vis! Love how fun this video was.
Hi,
Thank you for this information!
Indeed, in vivo measurements are more informative than their in vitro counterparts. I'm looking up the labsphere method you mentioned :)
I very much appreciate an input like yours! It helps everyone on this channel to learn and see things from a broader perspective 👍
I like the little details, for example you now use a background when you prepare solutions. Also the other camera angle focusing on the things you do with your hands, it looks more professional. Good Job Dr. Yared 😉😁
Good work. Looks like you're just starting out with these and they already look great. Good luck on your RUclips journey!
@dominationbeats2312
I appreciate you noticing the details we incorporated into our video :)
By the way, the camera shots you mentioned were taken with our new Sony camera! It's an upgrade to our toolkit and we're happy we bought it
Thank you@@myklebuster
Indeed, we just started and it's fun!
I am not sure what's the purpose of filtering the solution. Could that possibly affect the result?
Great question!
Filtering is necessary to remove large particles that could affect the UV/Vis measurement. In fact, the complete procedure (including filtering) is documented in the resources in the description below the video.
I'm glad you noticed this detail :)