Sun protection : Choosing the best product

Sun protection : Choosing the best product

Choosing the right sunscreen might not be as easy as it looks. SPF, UVA, UVB, Mexoryl, photostable – these are just a few of the terms you need to understand if you are seeking optimal sun protection!

Sun protection factor (SPF)

When buying sunscreen, you first need to check its sun protection factor – or SPF. This indicator lets you know how long you are protected against sunburn when exposed to the sun. For example, if, without sunscreen, your skin normally burns after 20 minutes, it will take 300 minutes (5 hours) to do so with an SPF 15 sunscreen. But, of course, that’s only if it’s applied properly.

The SPF number indicates the level of protection provided against UVB rays. It is important to remember, however, that a product with an SPF of 30 does not protect twice as much as a sunscreen with an SPF of 15. In fact, an SPF 15 product blocks 93 percent of sunrays, while an SPF 30 product blocks 96 percent of them.

Skin types and amount of sun exposure

Some people burn easily, while others are more resistant to sunburns. Knowing your skin type and recognizing when and how you expose your skin to the sun will help you choose the product that’s right for you.

SPF 60 productsare recommended for those who:

  • Have extremely sensitive skin that burns easilywhen exposed to the sun;
  • Have fair skin, red or blond hair and light-coloured eyes; 
  • Work or stay outdoors all day;
  • Take part in activities at high altitudes or travel to tropical destinations.

SPF 45 products are best suited for those who:

  • Have sensitive skin and/or those who, while they are fair skinned, still tan lightly when exposed to the sun;
  • Stay in the sun for an extended period of time (i.e. an afternoon at the beach or a hike in the mountains).

SPF 30 products are ideal for people who:

  • Tan easily;
  • Stay outdoors for a short time.

As for SPF 15 products, they are for people who:

  • Have matte skin;
  • Rarely burn;
  • Enjoy moderate exposure to the sun (going in and out throughout the day).

      But remember! Even a sunscreen with the perfect SPF will not provide adequate protection if you do not use enough product and do not reapply it as often as needed. In fact, you should apply a generous quantity of sunscreen, 30 minutes before going outside and reapply two hours later, as well as after swimming or intense exercise.

      UVA and UVB rays

      It is important to select sunscreen that blocks both UVAs and UVBs, since both types of rays are associated with skin cancer. UVBs cause sunburns and weaken the superficial layers of the skin (the epidermis). On the otherhand, UVAs, which are slightly less powerful, attack the deeper layers of the skin, contributing to its premature aging.

      UV blockers

      Because the SPF protects only from UVB radiation, sunscreens must contain a compound that blocks UVAs, as well. These ingredients act as physical barriers and give sun protection products their typical whitish look.

      To find a good UVA block, look for these ingredients:

      • Mexoryl (SX or XL);
      • Titanium dioxide;
      • Zinc oxide;
      • Avobenzone (Parsol 1789);
      • Octocrylene.

      Photostable and waterproof products

      Be sure to opt for products that are photostable, which means that they retain their properties under the effect of the sun.

      Also, if you perspire heavily or go swimming, remember to reapply your product. The same is true for sunscreens that are water resistant. In fact, water droplets increase the impact of the sun’s rays on the skin.

      And what about children?

      Dermatologists do not recommend the use of sunscreen on babies younger than six months old, nor do they advise exposing themto the sun. For children over six months of age, look for a product with an SPF of at least 45 that is free of oxybenzone (BP-3) and PABA. These two ingredients are allergens. Generally speaking, the sunscreens available on the market for children have been adapted to their sensitive skin.

      Lastly, always select a sun protection product that bears the logo of the Canadian Dermatology Association.

      Pharmacy services

      Did you know that in Canada sunscreens are classified as drugs, not cosmetics? If you have questions about sun protection, talk to your pharmacist. He’s there for you!

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