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8 questions about sunscreen answered

by Ida Harris

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Summer is coming. Many people may start to think about pulling out the sunscreen. Despite sunscreen being a relatively popular skincare products, some people are still wondering about one thing or two about it. That is why, the following are answers to some of the most common questions about sunscreen.

Question 1: Do I have to wear sunscreen every day?

Yes, you do because ultraviolet ray which is the cause of skin damage and skin cancer is always there, be it rainy or sunny, summer or winter.


Question 2: Why is it important to put on sunscreen?

In fact, sunscreen can do more than just shielding you from harmful UV ray. In addition to preventing sunburnt, blotchiness and lowering the risk of skin cancer, sunscreen could keep sign of premature aging such as wrinkle and fine linesat bay. Added to that, nowadays, sunscreen is made into a cosmetic item which keeps your skin radiant and healthy.


Question 3: What is SPF?

SPF stands for sun protection factor which is often found on any the packaging of any sunscreen. In short, it tells how well the sunscreen could protect your skin from UV ray. For example, SPF 50 means in every 50 UV rays, one could pass through the other 49 rays is blocked.

Going by SPF, you could know how long you could stay out under the sun with the sunscreen on. To take an example, SPF 30 sunscreen allows you to enjoy the outside 300 minutes or 5 hours; in case of SPF 50, it is 500 minutes or about 8 hours.

For everyday use, water-resistant SPF 30 and SPF 50 is recommended.


Question 4: Is it true that the higher the SPF, the better the protection is?

No, it is not. Although there are sunscreens with SPF 75 and SPF 100, it does not offer more protection than lower SPF.


Question 5: What is the right way to apply sunscreen?

First, as said above, SPF 30 is the minimum for everyday use. Also, it should be water resistant and have broad spectrum, that, is to protect skin from both UVA and UVB ray.

Second thing to remember is that you need to spare 20 minutes for the sunscreen coat to sink in before going out.

Last but not least, reapply every 2 hours. Should you sweat a lot or be in the water, reapply in one hour.


Question 6: How much sunscreen is enough?

For a full-body application, it takes at least 35 millimeters. Apply half a teaspoonful of sunscreen for arms, face, neck and ears, and teaspoonful for legs and torso (back and front)


Question 7: Does sunscreen cause harm to fishes?

True. Some sunscreens contain oxybenzone and the preservative butylparaben which can kill corals. Therefore, for beach-goers, consider using sunscreen with ingredients such as zinc oxide or titanium dioxide because they dissolve easily in nature.


Question 8: Can long-sleeve clothing replace sunscreen?

Not all fabrics could protect you against UV rays. Cotton could offer protection of as high as UPF 10 (ultraviolet protection factors, SPF for clothing). Dark-colored velvet and denim has UPF of up to 50. However, you may not want to wrap yourself in clothes under a scorching weather.

If you want to save yourself the trouble of applying sunscreen, try sweat-wicking clothing which has UPF 30.

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