What is Sun Protection Factor?


Everyone must have used sunscreen in their life, and if you haven’t then you should use it now. To enjoy the outings freely without any fear of harmful sun rays; UVAUVB, IR and also pollution you should be using a broad-spectrum sunscreen gel with good Sun Protection Factor (SPF).


Sunscreen will protect your skin from sunburns, suntans, photo-aging, dull complexion, skin inflammation and even skin cancer in more severe cases. Sunscreen For Face has a number written as Sun Protection Factor, i.e. SPF 15, 20, 30 or 50 on the pack. Have you ever wondered what does it mean and what is its significance?

Let’s understand
Sunscreens are formulated on the basis of scientific calculations known as Sun Protection Factor which is the measure of the protection offered by a sunscreen from harmful UV rays. Most of the sunscreens have mentioned this number on the pack. The Sun Protection Factor also tells about the time at which the sunscreen needs to be applied again.
When to re-apply the sunscreen? If you are exposed to the sun and pollution for a longer duration then you need to re-apply your sunscreen. SPF wise re-applying time is mentioned below:

Sun Protection Factor

Time to re-apply the sunscreen



After 1 hour


After 2 hours


After 4 hours


After 6 hours

No doubt a high Sun Protection Factor can protect your skin from sunburn-causing UVB rays, but your skin also needs UVA protection. The protection grade of UVA rays is denoted by PA in the sunscreen. PA is leveled by PA+, PA++, PA+++; the more the plus signs, the more is the protection from UVA rays.


These days not only the UV rays but IR rays and Urban Pollution have become the concern for the skin. So, you should buy a sunscreen which offers you protection against all of these harmful environmental factors. There are a few sunscreen brands on the market which offers complete protection, one of the best sunscreens is the Derma Essentia SPF 50, PA+++ Sunscreen Gel. The Gen-next encapsulated ultralight texture sunscreen gel is non-oily, non-tacky & suits normal to oily skin which protects your skin from UVA, UVB, IR & Urban Pollution.

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