Effective SPF Sunscreen

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Effective SPF Sunscreen

• By Lexi Soifer

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Abstract

• Effective SPF Sunscreen
• The purpose of my project is to find which SPF
  works better. I think the plate that has the SPF
  60 will have less color than the beads with SPF
  45. First you have to gather your materials. Then
  you label the plate with the correct description
  of the beads. You next coat the beads with the
  correct sunscreen, put them on the right plate,
  then put them outside in the sun. After 5 minutes
  take then inside. The observe them and record
  your data.

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Planning

• Materials
• 4 small paper plates
• different SPF sunscreen lotions
• aluminum foil
• UV sensitive beads
• 4 black paper squares
• timer

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Planning Continued

• Procedure
• Gather your materials.
• Write no sunscreen, no sunlight on one plate.
  Write no sunscreen, full sunlight on another
  plate. Label the other two plates with the SPF
  values of the sunscreens you will test, for
  example, SPF 45/full sunlight and SPF 60/full
  sunlight.
• Place a small dab of sunscreen on a square of
  aluminum foil. Coat 4 beads with the sunscreen.
  Put the beads on the plate with the matching
  label.

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Planning Continued

• Procedure Continued
• Repeat with the other sunscreen. Use the same
  amount of sunscreen.
• Place 4 uncoated beads on the no sunscreen/no
  sunlight plate and 4 uncoated beads on the no
  sunscreen/full sunlight plate.
• Put black paper over each plate to keep out
  sunlight. Wait 5 minutes.
• Put the plates back in direct sunlight. Remove
  the black paper form every plate except the no
  sunscreen/no sunlight plate.
• Observe the beads after 30 seconds. Record the
  amount of color change.

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Data
UV Beads (description) Amount of Color Change after 30 seconds (none, a little, some, a lot)
No sunscreen / No sunlight none
No sunscreen / Full sunlight a lot
SPF 45 / Full sunlight some
SPF 60 / Full sunlight a little
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What Ive Learned

• I have learned that the higher the SPF the
  more effective it is. The 60 SPF is more
  effective than the 45 SPF in full sunlight. The
  beads with nothing on them and no sunlight has no
  change. The beads with nothing on them and in the
  sun had the most change. If you dont wear
  sunscreen you have no protection. Always wear
  sunscreen!

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Sources

• Cooney, Timothy. Scott Foresman Science.
  Glenview, Illinois Scott Foresman, 2006.

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Acknowledgements

• I would like to thank my dad. He helped me
  from start to finish. He helped me set up the
  project, helped carry things, observe, and
  corrected me when I did my project the wrong way.
  I would also like to than my sister for taking
  some of the photos for me when my hands were
  full. Last I would like to thank my mom for
  overseeing the project go smoothly.

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Funny Mess Ups!

• When we first started all the plates blew
  everywhere and everything on them fell off.
• We then labeled the plates wrongly.
• We put the wrong sunscreen on the wrong beads.
• We didnt time correctly so we had to redo it.

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