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Calculating Estimated SPF Values
I am working on a project and have been asked to calculate the estimated SPF value. What is the bets way to do this? There is a mineral and a chemical option I need to calculate. I found some information but I didn’t know if there was a resources people typically used for this that they could recommend. Thanks for the help in advance!
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6 Replies
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Wow!! Thank you so much for sharing!
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from experience the BASF simulator is excellent for predicting UVA/UVB ratios, but the actual SPF achieved in practise tends to vary depending on the nature of the product
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Yes, use the sunscreen simulator as a very loose guideline as the thickness and composition of a formula can impact the SPF.
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Thank you all for the thoughtful feedback - I appreciate it. It was interesting I ran the simulator on a product and it guessed 8 but we had sent it out and got a 15. I’m assuming boosters, thickness, other raws also affect the product’s rating.
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Indeed. This is why the simulator should only be used for estimations.
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