![]() Erythema severity was diminished on the SPF 100+ protected side.” “The results of the current study demonstrate that the SPF 100+ sunscreen provided a level of enhanced sunburn protection that was clearly observable following a single period of exposure. Sunscreen Conclusions You’ll See in the Mediaīased on this, the authors of the study have made conclusions you will see in the media and advertising, they state: I am not sure why that choice was made in the analysis I would think this is an important endpoint to know. 23 of the 199 subjects (12%) were excluded because no difference in redness was visible between their right and left sides of their face.Dimethicone acts to help protect skin barrier from harsh wind and solvent exposures. The Banana Boat product has the ingredient listed much farther down in the ingredient list. The Johnson & Johnson Neutrogena product has dimethicone as one of the highest concentration base ingredients. This is relevant because the two products studied have very different base creams. Why redness is considered to be only due to sunburn and not windburn is unclear to me. Chapping from windburn can also present as redness and it is not possible, in my opinion, to separate windburn from sunburn in many cases. Dermatologists looked at the subjects’ skin the day after they were on the slopes and assessed it for redness.But does that mean they had better sun protection? 55.3% of subjects counted who had used the Neutrogena product had less redness. For years, we have said that maybe having higher concentrations of sunscreen actives is good in this context because when someone applies too little sunscreen, maybe they are getting enough protection when they use higher SPF products. Sunscreen as sun protection is inconvenient. Almost no one puts enough sunscreen on or reapplies as directed. We dermatologists know this happens and is simply part of the reality we work with when teaching people about sun protecting their skin. The amount of product used was also compared among the participants and was found to be consistent among the two sunscreens studied.Ĭurious elements of the study findings: The subjects did not apply the recommended amount or reapply as we direct.The study endpoint evaluated was the amount of redness seen on their skin by a board-certified dermatologist the day after being on the slopes.They were on the slopes all day (average of 6.1 hours) and reapplied an average of once during that time.This study has practical, real-life applications because the subjects were allowed to apply their normal amount of sunscreen, and to reapply as they normally would.The products were unknown to them and the sides of the face each product was applied to varied among the participants.They applied Neutrogena’s Ultra Sheer Dry-Touch SPF 100 or Banana Boat Sport Performance SPF 50 to either the right or left side of their face.Fair-skinned adult snow boarders and skiers in high-altitude Vail Colorado were properly randomized and all studied on one day.This was a well-structured study from a scientific method’s perspective. My analysis of this new, sunscreen study: Mineral zinc oxide pretty much does not break down to any significant extent.Titanium dioxide breaks down to some extent. ![]() Chemical actives, such as those used in this study, do break down while working to protect you.When relying on product alone for extended sun protection, you are supposed to reapply every 2 hours in the sun and after water exposure or rubbing product off your skin with clothing or a towel.Īdditionally, the type of active ingredients determines if the product breaks down while neutralizing UV rays or not.You must apply 2mg/cm2 which is a shot glass full of product if you are of average size and wearing a bathing suit (not the easiest instructions to translate into reality).The protection of your skin by sunscreen depends on how much product you apply. Important points about sunscreen and sun protection of your skin: Higher SPF products provide marginal increased protection from 98-99% of UVB rays. ![]()
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