Evaluation of Sunscreen SPF Calculation Accuracy

by Fatemeh Mottaghian

Sunscreen traditionally focuses on blocking UV-B rays, assuming it boosts UV-A protection. However, this assumption questions its efficacy. SPF testing assumes linear protection over time, ignoring the known decay in protection. To reevaluate, we tested three popular sunscreen brands for bacterial growth under UV light exposure. Results revealed all performances fell short of label claims, prompting a reconsideration of sunscreen effectiveness.

Major: 
Biology
Exhibition Category: 
Health and Life Sciences
Exhibition Format: 
Poster Presentation
Campus: 
University Park
Faculty Sponsor: 
Carly Sjogren
Poster Number: 
166