Sunscreen: Everything you need to know when buying and using it – News

Sun publicity – particularly now, throughout the summer time – with out enough pores and skin safety may cause fast injury, akin to sunburn, or lengthy-time period injury, akin to most cancers. Therefore, right now of the yr, the significance of using sunscreen correctly wants to be strengthened.

Throughout the yr, Brazil has a excessive incidence of UV (ultraviolet) radiation, which apparently intensifies in summer time and can attain harmful ranges.

INCA (National Cancer Institute) estimates that, from 2023 to 2025, Brazil will register 9,000 instances of melanoma pores and skin most cancers, probably the most aggressive kind, as well as to 220,000 instances of non-melanoma most cancers.

A lifetime of sunburn considerably will increase the danger of such a tumor sooner or later, in addition to pores and skin getting older and scarring.

Prevention consists of using sunscreen at any time when you’re outside, particularly in environments like seashores and swimming pools, and avoiding solar publicity.

“There’s a false impression that pores and skin most cancers is a small most cancers, however it’s not. Melanoma has a reasonably excessive mortality price. And others, although not as lethal, have what we name excessive morbidity. They disfigure folks, and You have. To carry out surgical procedures that usually disable them aesthetically, as a result of they did not care for themselves. Photoprotection.

Filter, protector or inhibitor?

In Brazil, merchandise with the title “solar blocker” are not allowed to be offered, Schalka explains.

“Sunblock offered the concept of ​​complete blocking of photo voltaic radiation, which isn’t the case with every other product.”

Accepted phrases are: sunscreen, sunscreen or photoprotector, the latter being synonymous, with no distinction in safety issue.


Every sunscreen comes with a bundle quantity, which is the SPF (Sun Protection Factor). It is the denominator obtained after calculation.

This equation divides the quantity of photo voltaic power (ultraviolet radiation) required to trigger sunburn on protected pores and skin by the quantity of photo voltaic power required to trigger sunburn on unprotected pores and skin.

In sensible phrases, the next SPF ensures extra safety than a decrease SPF. Anvisa (National Health Surveillance Agency) authorizes these merchandise to differ between FPS 6 and FPS 99.

“Because of the numerous elements that have an effect on the quantity of photo voltaic radiation, SPF doesn’t replicate time within the solar. In different phrases, SPF doesn’t inform the buyer how lengthy they’ll spend within the solar with out getting sunburned,” states. FDA (US Food and Drug Administration).

How to select safety issue

Shalka says that The Brazilian Consensus of SBD and Photoprotection recommends an SPF of at the least 30 (Understand the rationale within the subsequent matter).

There are a number of variables to contemplate when selecting a guard:

• An individual’s pores and skin kind: Fair skinned people will need the next safety issue. People with darker pores and skin might desire an SPF nearer to 30;

• How lengthy an individual might be within the solar: Long days on the seashore would require a stronger safety issue, in contrast to on a regular basis use, the place we spend much less time uncovered to intense ultraviolet radiation;

• Time of day when uncovered to the solar: According to the FDA, one hour of photo voltaic power hitting the pores and skin at 9 a.m. is identical as quarter-hour within the noon solar;

Time to re-apply: The SBD skilled says the best is to apply a protector each two or three hours or after a number of minutes within the water throughout a day on the seashore or pool, as even water-resistant merchandise have their limits when we’re out for lengthy intervals of time. submerged;

• Amount of product used: This issue, in accordance to Schalka, will most positively or negatively intervene with sunscreen effectiveness.

Guard amount

“People do not apply sunscreen completely, as a result of it ought to be used. When you purchase an SPF 30 protector, if you do not use it accurately it will not ship 30. It has its draw back”, observes. Dermatologist

He concluded in a postgraduate thesis that the best for an individual to get hold of the safety claimed on the bundle is to use a 2 mg/cm² pores and skin cream or lotion.

“In observe, this represents a median of 35 grams to 40 grams for a 70 kg individual. That’s quite a bit, folks do not even remotely do it.”

That can be the equal of using a 3rd of a 120 ml bottle of sunscreen without delay.

If you apply half, 1 g/cm², which continues to be quite a bit, SPF 30 turns into equal to SPF 10.

As virtually nobody does, there’s a suggestion for the next SPF for sure pores and skin varieties and reapplying at any time when doable.

Product varieties

Creams, gel-lotions, serums, sprays… The types of presentation of sunscreens are various, with some centered on the face or physique, provides the dermatologist.

“In normal, a facial protector wants to be a extra elaborate beauty. Brazilians have extra oily pores and skin, so they’re dry merchandise, not too shiny, not greasy. So, its spreadability could be completely different. Body, perfect product is that which is less complicated to unfold, as a result of it has extra floor space, which might higher cowl areas with hair.”

He factors out that the ingredient that protects the pores and skin, nonetheless, is identical in all of them. The distinction might be sensory, how it is utilized and how the pores and skin takes care of use.

In the case of the spray, the physician says that it additionally has the identical issue because the cream, however gives much less safety if utilized in small quantities.

“If an individual does a perfect software, they’ve to apply it as in the event that they have been graffitiing on a wall, in a zigzag sample. To lower your expenses, folks spray just a few instances and unfold it with their arms. This loses the feel of that movie. . It works badly due to it. That folks do not apply it absolutely.”

Schalka’s suggestion is to use a cream protector throughout your physique earlier than going out to the seashore or pool, already in your bathing go well with or whereas bare.

“Apply a beneficiant layer of sunscreen. You’re already properly protected. And then, on the seashore, the place it’s more durable to apply cream, as a result of it sticks to the sand and all that stuff, a sprig works properly to reapply this. is.”

Another advised use of the spray is for the scalp, particularly in folks with brief hair. Doctors warn that that is an space that’s usually missed and that it is widespread for some pores and skin lumps to seem.

“Cream will make hair greasy, and an individual will not like that. The spray is not excellent, it leaves a bit greasiness, however it disguises itself after it dries. And I at all times advocate sporting a hat. Both issues, as a result of, on the time [a pessoa] Go for a swim within the sea and take off your hat, there is a lifeguard to assist.”

the lips

Besides the scalp, lips are one other a part of the physique that many individuals don’t care to defend.

“Just as a result of the lips do not burn doesn’t suggest they don’t seem to be inclined to issues”, warns the physician, declaring that what may very well be an issue is actinic cheilitis, a kind of solar-induced degeneration of the pores and skin on the lips. which is inclined to pores and skin most cancers.

Can be protected with the identical product used for face or physique. However, to keep away from the style of the guard within the mouth, there are sticks with sunscreen that fulfill this perform.

Sun safety capsules

Although they’ve been offered in Europe for just a few many years, capsules to defend in opposition to injury brought on by ultraviolet rays are comparatively new in Brazil.

This kind of product is constituted of crops Polypodium leucotomoswhich has the power to scale back radiation injury that additionally manages to take away the sunscreen barrier and assault the DNA of cells, producing free radicals and interfering with the pores and skin’s defenses.

“It is a secondary safety mechanism. It ought to by no means be used solely. It ought to be used with a topical sunscreen. People with delicate pores and skin, particularly reasonable pores and skin, a historical past of pores and skin most cancers in his or her household, issues with age spots, we advocate this product. We advocate combining it with a topical sunscreen within the workplace”, provides the dermatologist.

Care shouldn’t be restricted to summer time

Finally, it ought to be famous that pores and skin safety care shouldn’t be restricted to summer time days solely.

“Sunscreen is a product that’s not low cost, for a lot of causes, however it is a well being product, it is not only wellness, it is anti-getting older”, emphasizes Schalka.

According to him, research present that about 70% of the radiation we soak up throughout our lifetime comes from routine actions.

“Every day, [você] You can use a product with a barely decrease SPF. It is not going to be utilized to an space the place you are sporting garments, however to your face, specifically, we advocate making use of it at the least within the morning and strengthening it at lunchtime. This already affords a big advantage of safety over time. Women have tailored to this extra as they use day by day sunscreen as a part of their day by day care. But for many males, this holds much more resistance.”

* Article initially revealed on 12/21/2021

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