SPF, something to know about before you buy a sunscreen

  • Full form is Sun Protection Factor, which is exactly what it sounds.
  • Sunscreen blocks the photons of the Sun from penetrating into our skin.
  • SPF is a factor to measure that blockage. And as you can see in the photo, it is not linear.
  • As you can there is minute difference among SPF 30, SPF 50 and SPF 100. Here more is not better.
  • It is advisable to buy SPF 30 over SPF 50 or 100. It doesn't make much difference.

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