The Mudcat Café TM
Thread #166210   Message #4156757
Posted By: MaJoC the Filk
30-Oct-22 - 02:07 PM
Thread Name: BS: an umbrella thread
Subject: RE: BS: an umbrella thread
> "SPF30 sunscreen filters 96.7% of UV radiation and SPF50 filters 98%"

--- so SPF50 filters more than half as much again compared to SPF30. Percentages are surprisingly misleading; I view them as a spawn of the Devil.