Sunscreens are vital to skin care nowadays. They protect you from UV rays and moisturize your skin. Read more about sunscreen SPF at Meri Sehat in detail.

Sunscreens: SPF Explained!

SPF (Sun Protection Factor) is the measuring factor for protection from the sun’s UVB rays.

Introduction

<p>SPF 15 blocks 93% of UVB rays, and SPF 30 blocks 97% of the UVB rays. Moreover, SPF 50 blocks 98% of the UVB rays. Experts recommend using between SPF 30 and 50 for sufficient protection against the sun. However, for complete protection, you might want to go above SPF 50+.</p>

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Understanding SPF In Sunscreens

<p dir="ltr">You also need to make sure that your <a href="https://merisehat.pk/article/retinoids-and-sunscreen-a-love-affair">sunscreen</a> is broad-spectrum, which means that it should have both UVA and UVB rays. Both UVA and UVB rays have overlapping effects. They can cause burns and premature ageing. However, UVA rays are for dark spots and fine lines, while UVB rays play a very significant role in the production of sunburns and cancer.</p>

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<p>Everyone who is under the sun should be wearing sunscreen, no matter what their skin tone is.</p>

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<h5><strong>How Much Sunscreen Do You Need?</strong></h5>

<p>You need half a teaspoon of sunscreen for your face and neck, and one ounce for your entire body. Since sunscreens break down with time, it is recommended that you re-apply it every two hours, and more frequently if you sweat a lot or if you are a swimmer. In both cases, your sunscreen breaks down faster. Moreover, the best practice is to use sunscreen at least thirty minutes before sun exposure.</p>

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<p dir="ltr">There are two types of sunscreens, mineral sunscreen and physical sunscreen. But which one is better? Both mineral and physical sunscreens absorb UV rays and help in preventing skin damage. However, mineral sunscreen also reflects some UV rays. So, the conclusion is that neither is better than the other because they both use different active ingredients. The actives in chemical sunscreens are avobenzone and homosalvate. Moreover, mineral sunscreens contain zinc oxide and titanium.</p>

<p dir="ltr">In addition to sunscreen, the American Cancer Society also recommends having a holistic approach to sun protection. They recommend wearing protective clothing, avoiding tanning beds, and seeking shade between 10 am to 4 pm. All of these can cause long-term skin damage and contribute to skin cancer.</p>

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<h5><strong>Which Sunscreen Is The Best?</strong></h5>

<p dir="ltr">The best sunscreen is the one that you will want to wear every day. Sunscreens are available based on your skin type and complexion, which easily blend into the skin. There is a right pick for everyone.</p>

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	<h5><strong>Protects Your Skin</strong></h5>
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<p dir="ltr" style="margin-left:0px !important; margin-right:0px !important">Sunscreens protect your skin from UV rays that are harmful to the skin because the depletion of the ozone layer has increased our chances of sun damage. Sunscreens block these rays, which reduces the likeliness of sunburn. Furthermore, look for a sunscreen that is no less than 30+ SPF to use every day. For full-body coverage, you will need to use at least one ounce of sunscreen.</p>

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	<h5><strong>Lowers The Risk Of Skin Cancer</strong></h5>
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<p dir="ltr" style="margin-left:0px !important; margin-right:0px !important">The most common form of cancer in the United States is skin cancer<sup><a href="#accordion">[1]</a></sup>. According to CDC, 71,943 people had been diagnosed with melanomas of the skin in 2013. In addition, 9,394 of them were fatal<sup><a href="#accordion">[2]</a></sup>. When you apply sunscreen every day, you reduce your risk of getting skin cancer to half.</p>

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	<h5><strong>Prevents Premature Aging Of The Skin</strong></h5>
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<p style="margin-left:0; margin-right:0">UV rays damage the skin and cause photoaging. It is characterized by a thick and leathery look in addition to discoloration and breakdown of collagen which causes wrinkles or sagging. Studies say that those who apply sunscreen religiously before the age of 55 have 24% fewer chances of developing signs of ageing, compared to those who don&rsquo;t<sup><a href="#accordion">[3]</a></sup>.</p>
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	<h5><strong>Maintains The Skin Tone</strong></h5>
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<p dir="ltr" style="margin-left:0px !important; margin-right:0px !important">Sunscreen protects the skin from discoloration and dark spots caused by sun damage. It helps you in maintaining a smoother and more even skin tone.&nbsp;</p>

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<p>It has been recommended that infants, seniors, and people who have had a history of skin cancer take extra precautions against skin cancer because their skin is vulnerable. Everyone should prioritize using sunscreen before stepping outdoors and avoid prolonged exposure to the sun. A wide-brim hat and ultraviolet protection clothing are also helpful in protecting against UV rays.</p>

<p>Infants have very sensitive skin. Therefore, babies under six months should avoid spending a lot of time under direct sun. Moreover, infants and toddlers who are older than six months with thinner skin should use sunscreen that contains zinc oxide and titanium oxide. Zinc and titanium do not irritate the skin because they don&rsquo;t penetrate it and sit on the surface instead, deflecting UV radiation.&nbsp;</p>

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Key Points

<ul><li style="line-height: 1.2; margin-top: 0pt; margin-bottom: 0pt;"><span style="font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline;">Sunscreens are important because UV rays penetrate deep into the skin, causing damage, wrinkling, and photoaging. All of which contribute to skin cancer. Moreover, UVB rays are the biggest contributors to skin cancer and are more prevalent during the day.</span></li><li style="line-height: 1.2; margin-top: 0pt; margin-bottom: 0pt;"><span style="font-size: 1rem; letter-spacing: 0.2px;">SPF protects your skin from the sun, meaning if you’re using SPF 15, you can stay in the sun fifteen times longer compared to without protection.</span></li><li style="line-height: 1.2; margin-top: 0pt; margin-bottom: 0pt;"><span style="font-size: 1rem; letter-spacing: 0.2px;">You should look out for sunscreens that provide broad-spectrum protection, are water-resistant, and have active ingredients. For example, zinc and titanium oxide.</span></li></ul><p><br></p>

[1] Guy Jr, G.P., Machlin, S.R., Ekwueme, D.U. and Yabroff, K.R., 2015. Prevalence and costs of skin cancer treatment in the US, 2002− 2006 and 2007− 2011. American journal of preventive medicine, 48(2), pp.183-187.

[2] US Department of Health and Human Services, 2014. Skin cancer as a major public health problem. In The Surgeon General's Call to Action to Prevent Skin Cancer. Office of the Surgeon General (US).

[3] Sander, M., Sander, M., Burbidge, T. and Beecker, J., 2020. The efficacy and safety of sunscreen use for the prevention of skin cancer. CMAJ, 192(50), pp.E1802-E1808.

[4] Gallagher, R.P., 2005. Sunscreens in melanoma and skin cancer prevention. Cmaj, 173(3), pp.244-245.

[5] Tavares, R., da silva Paulitsch, F. and Zhang, L., 2018. Use of sunscreen and risk of melanoma and non-melanoma skin cancer: a systematic review and meta-analysis. European Journal of dermatology, 28(2), pp.186-201.

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