5 facts about sunscreen you need to know
Protecting your skin from sun damage is key and that starts by knowing how to choose the right sunscreen, how much to put on and more.
Most of us know that we should be applying sunscreen to at least our face every day – but is that enough? And what does SPF mean anyway?
Find the answers to all these questions and more with the help from Dermalogica here:
- Not all sunscreens protect against both UVA (ageing) and UVB (burning) rays
Applying any old SPF product won’t keep skin safe from both types of harmful UV rays. Look closely at the labels and ingredients of the chemical or physical sunscreen you buy.
The SPF (Sun Protection Factor) number indicates how long it takes for skin to redden from UVB rays. For example, SPF 15 means it takes 15 times longer. UVA rays (the same ones emitted by tanning booths) penetrate the skin more deeply, accelerate the signs of skin ageing, and generate skin cancer.
Broad Spectrum SPF contains a combination of ingredients known to protect skin against both types of UV rays. Chemical sunscreens like Avobenzone absorb ultraviolet (UV) radiation, while physical sunscreens (Titanium Dioxide, Zinc Oxide) reflect or scatter it.
- Chemical or physical sunscreen?
Chemical sunscreens absorb into the skin and are usually more popular because they feel lighter, look less noticeable, and are more water and sweat resistant. They use active ingredients like Avobenzone and Helioplex.
Physical sunscreens, or mineral sunscreens, sit on the surface of the skin. They can feel heavier and look more noticeable, but they also provide added coverage. Look for active ingredients like Zinc Oxide and Titanium Dioxide to identify them.
- A base tan does not protect you from the sun
There is no such thing as a safe tan. By definition, a suntan is your skin’s defence to being harmed by UV exposure. Your cells respond to the affront by producing more melanin (pigment), and your skin darkens as a result. There is nothing healthy or preventive to be gained from trying to acquire a base tan.
- Sunscreen isn’t just for summer
Photodamage or UV exposure (which causes ageing) can occur from exposure to daylight through clouds, rain, glass, and even fluorescent indoor lighting. Roughly 90 percent of photoaging is preventable by wearing SPF daily.
- You’re probably not using enough sunscreen
Creams and lotions tend to deliver better protection than sprays. The American Academy of Dermatology recommends a “liberal use” of SPF 30 (picture a shot glass full) for the body. For your face, apply about a quarter-sized amount. Reapply every two hours (or after swimming or exercising).
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