What’s Spf And How Much Of It Does Your Skin Require?

Written by Sanya HamdaniSep 16, 2023
What’s SPF and how much of it does your skin require?

We regularly stress on the importance of wearing a broad spectrum sunscreen to keep skin protected from the harmful UV rays of the sun. We advise our readers to wear sunscreen throughout the year because of its many benefits. However, like most people if you too are confused about the term SPF and what the numbers associated with it indicate, we’re here to clear all your doubts.


What is SPF?

How to apply sunscreen?

SPF or Sun Protection Factor, indicates the ability of your sunscreen to protect skin from radiation that can cause sun burns, skin cancer and signs of aging. However, lately most people are under the impression that higher the number of SPF higher the protection offered. This is not true because the sun protection factor scale is not linear.

How is SPF calculated?

SPF 15 blocks 93% of UVB rays

SPF 30 blocks 97% of UVB rays

SPF 50 blocks 98% of UVB rays

SPF 70 blocks 98.5% of UVB rays

SPF 100 blocks 99% of UVB rays


How to apply sunscreen?

How to apply sunscreen?

On a normal sunny day a SPF 30 sunscreen which blocks 97% of UVB rays is ideal for your skin, irrespective of your skin type. Many skin experts recommend an SPF 50 sunscreen because we don’t wear a thick enough layer to keep our skin protected. When it comes to sunscreen reapplication is important every 2 hours because its effective wears off with time. High level of physical activity demands more frequent application, for example swimming which can wash off the sunscreen from your skin easily.

Sanya Hamdani

Written by

Sanya Hamdani is a skincare enthusiast and lipstick hoarder, she truly believes no two red lipsticks look exactly alike. With a Master's degree in Communication & Journalism and 5+ years of digital writing experience up her sleeve, Sanya has some of the biggest beauty experts in the country on her speed dial. When she's not swatching products or writing about the latest trends in beauty, you will find her watching F.R.I.E.N.D.S. or cooking up a storm in the kitchen.


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