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Determining the effectiveness of different sunscreen products in blocking ultraviolet (UV) radiationFeatured science projectScience project video


After comparing the UV index of the15 test groups, it was observed that there was a significant difference in the level of UV radiation detected for sunscreen products that had SPF 15 and SPF 30 protection. In other words, a lower UV index was detected for sunscreen products with SPF 30 compared to sunscreen products with SPF 15.  On the other hand, there was no significant difference in the UV level detected for the SPF 30 and SPF 50 sunscreen products

Brand of sunscreen UV index
  No glass No Sunscreen SPF 15 SPF 30 SPF 50
A 6 5 2 1 1
B 6 5 3 2 2
C 6 5 2 1 1
D 6 5 3 2 2
E 6 5 2 1 1

Use the graph below to plot the results of the observations recorded in the table above.

UV sunscreen science fair project

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Complexity level:
Project cost ($):
Time required:
The set up and preparation of the test and control groups will require approximately one hour, while observations and recording of data will require one day.
Material availability:
May be purchased from a hardware store
Safety concerns:

Be extremely careful when handling glass. Adult assistance is required. You should also protect all participants from exposure to the sun. Use sunscreen/umbrellas and ensure that you are properly hydrated