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; UVA, UVB, IR and also pollution you should be using a broad-spectrum sunscreen gel with good Sun Protection Factor (SPF). It will protect your skin from sunburns, suntans, photo-ageing, dull complexion and skin inflammation.
Sunscreens have 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. The Sun Protection Factor also tells about the time at which the sunscreen needs to be applied again.
Why is the Sun Protection Factor (SPF) significant?
The Sun Protection Factor can vary from 1 – 90. These exhibit different levels of sun protection as:
- Low protection: The sunscreens with SPF 15 or below are marked 6 or 10 (depending on the factor from 6-9.9 or 10-14.9) offers low protection.
- Medium protection: The sunscreens with SPF 15 and up to 30 are marked 15, 20 or 25 (depending on the factor from 15-19.9, 20-24.9 or 25-29.9) offers medium protection.
- High protection: The sunscreens with SPF 30 up to 50 (depending on the factor from 30-49.9 or 50-59.9) offers high protection
- Very high protection: The sunscreens with SPF over 50 and marked 50+ (to be measured as at 60) provides very high protection.
When to re-apply the sunscreen?
If you are exposed to 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
(approximately)
|
15
|
After 1 hour
|
30
|
After 2 hours
|
50
|
After 4 hours
|
70
|
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 levelled 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 the best gel sunscreen which offers you protection against all of these harmful environmental factors.
There are a few products 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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