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SPF in depth

Hello everyone!


Today, we wanted to discuss SPF in detail as we believe it should be an integral part of Him, Her and Everyone’s skin care routine.


What is SPF?


SPF stands for Sun Protection Factor. It is a measure of how well a sunscreen will protect skin from UVB rays (the type of radiation that causes sunburn, sun damage and can contribute to skin cancer).


If your skin would normally burn after 10 minutes in the sun, then applying an SPF 15 sunscreen would allow you to stay in the sun for approximately 150 minutes without burning. Note that this does depend on your skin type, the intensity of sunlight and the amount of sunscreen used.


Why is it important?


It can decrease your risk of skin cancers and skin precancers (e.g. melanoma). It can also help prevent premature skin ageing caused by the sun, including wrinkles, sagging and age spots. If you are using SPF to prevent premature ageing, remember that the sun can cause wrinkling even through window exposure. So during lockdown, don’t forget to use SPF. The two areas that age most prominently are the face and hands, so ensure you cover these areas with SPF daily to reduce future signs of ageing.


But please remember that sunscreen alone is not enough to protect your skin. You should still seek the shade whenever possible and wear sun-safe clothing, a wide-brimmed hat and UV-blocking sunglasses.


What types are there?


SPF 15 - blocks 93% of UVB rays

SPF 30 - blocks 97% of UVB rays

SPF 50 - blocks 98% of USB rays


It could also be interpreted that an SPF 30 will block half the radiation that an SPF 15 would let through to your skin.


Most dermatologists recommend using a SPF 15 or SPF 30 sunscreen. Sunscreens with really high SPFs (e.g. SPF 75) do not offer significantly greater protection.


You should look for an SPF that has a broad spectrum (i.e. it protects skin from both UVA and UVB rays).


There are also water resistant (effective for up to 40 minutes of swimming) and very water resistant (effective for up to 80 minutes of swimming) sunscreens which should be used when swimming outside.


When/how should you be using it?

SPF should be applied to all exposed skin every day (30 minutes prior to going outdoors) and it should be reapplied every two hours if outside. Even if it is winter or if it is cloudy outside, you should still be wearing SPF as up to 80% of the sun’s UV radiation reaches the earth.


It should be reapplied immediately after swimming or heavy sweating.


A shot glass full should be used for your entire body for each application. This is very important as not wearing enough or not reapplying frequently enough reduces the efficiency of sunscreen.


Remember to protect those easy-to-miss spots including the tops of your ears, the back of your neck, your scalp, the tops of your feet and behind your knees.


Thank you for reading. See you next week for our post on the different types of hair. 🤍


Claritas.




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