5 sunscreen myths busted
Dermatologist tackles misconceptions about sunblock, plus how to correctly apply it
Expert tackles misconceptions about its use and health benefits
Living in the UAE means yearround sunny weather, but unfortunately not year round sunscreen usage for the majority of people. This is despite sun exposure being strongly linked to skin cancer, premature skin ageing and dark spots.
For some, it’s because they simply don’t care. Others might avoid protecting their skin due to myths about sunscreen.
tabloid! talks to Dr Rahul Chaudhary, Specialist Dermatologist, Medcare Medical Centre — Discovery Garden, about five major sunscreen misconceptions.
1 Using sunscreen causes Vitamin D deficiency
This is a very controversial statement with lots of research in favour and against it. I strongly feel that currently it’s a myth and sunscreen use does not cause vitamin D deficiency. In a 2019 New British Journal of Dermatology study, investigators recorded an increase of vitamin D in participants during a week of cloudless weather, with very high UV index, even when sunscreens were used properly and prevented sunburn.
In terms of sun and health, one fact is clearly established: there is a definite link between sun exposure and the incidence of skin cancer/photo ageing. So it’s clear that we need to turn to other methods than just the sun to get our vitamin D.
Fortunately, getting sufficient vitamin D is easier than most people realise. Humans can meet the daily requirement for vitamin D through diet, vitamin supplements or a more outdoor lifestyle with reasonable sun exposure (usually 5-10 minutes of exposure of the hands, arms, and face, two times per week).
Some food products naturally contain vitamin D, like fatty fish species like cat fish, salmon, tuna; fish liver oils like cod liver oil; others are fortified with vitamin D-packaged milk, juices etc.
So if you’re worried about you or your children getting enough vitamin D to maintain your health, have a look at your diet first. It’s an easy solution and a lot healthier than sitting out in the sun.
2 People with dark skin do not need sunscreen
This is a common misconception that dermatologists are working hard to clear up. Although dark skin does offer more natural protection from the sun’s harmful rays than light skin, no one is immune to the damage caused by the sun.
Health experts advise everyone, regardless of skin colour, to use sunscreen with an SPF of at least 30. Although darkskinned people won’t get sunburned as quickly, they will still burn and are still susceptible to sun-induced damage — such as sun spots, wrinkles and cancer.
“There is a definite link between sun exposure and the incidence of skin cancer/ photo ageing.” DR RAHUL CHAUDHARY | Dermatologist
3 You only need to apply sunscreen once
“I applied sunscreen in the morning so I should be set for the whole day” — the most common myth I hear in my office day in and day out.
Sunscreens generally only last about 90-120 minutes, especially if they are chemical blockers that break down after exposure to UV light.
Always re-apply sunscreen every two to three hours while you are exposed to the sun. Moreover, note that a normal sunscreen only offers protection against UVB rays. So, opt for one that mentions ‘broadspectrum’ on the label. A broad-spectrum sunscreen will effectively protect your skin from both UVA and UVB rays.
4
Ingredients in sunscreen cause cancer
False. There is no medical evidence that sunscreen causes cancer. There is a lot of medical evidence that UV rays from the sun and tanning beds do.
There are two main types of sunscreen — chemical and physical. Chemical sunscreens contain ingredients such as avobenzone and oxybenzone, which work to absorb damagecausing UV rays. Physical sunscreens are made of zinc oxide and titanium dioxide, which sit on the skin’s surface, where they absorb, deflect and scatter UV rays.
Multiple randomised controlled studies and research have shown that both types are extremely safe and effective, and have been used by consumers for decades.
For those who are extremely cautious, we recommend using the physical sunblock since they cannot be absorbed by the skin.
“Although dark skin does offer more natural protection from the sun’s harmful rays than light skin, no one is immune to the damage caused by the sun.” DR RAHUL CHAUDHARY | Specialist Dermatologist
5
SPF in foundation/make-up is enough to protect the face
Even if your foundation says it has an SPF 15 or so on, it generally isn’t enough sun protection for everyday use.
Make-up does not provide enough coverage. You need seven times the normal amount of foundation and 14 times the normal amount of powder to get the sun
protection factor on the label. No one does this.
Look for a broad spectrum sunscreen with at least SPF 30 that also moisturises and apply it as the last step in your morning skin care routine, right before your make-up.