Dermatologists always remind us to use sunscreen -- and for good reason. Sunscreen has been proven to reduce the risk of skin cancer, as long as we choose the right one. 

Sunscreen is a product applied on the face and skin to help us fight the effects of sun exposure, including the deadliest cancer, melanoma. It commonly comes in the form of gels, creams, sprays, and powders. 

Depending on the blockers used, sunscreen can either reflect the UV rays (physical blockers) or activate a chemical reaction (chemical blockers) that prevents UV damage.

Experts recommend putting on sunscreen 30 minutes before sun exposure to give it time to work.

Checking the label

Experts from the American Academy of Dermatology say the best way to scout and gauge any sunscreen product is to check the label to see its spectrum, SPF rating, and water resistance. Of course, other factors such as FDA certification and ingredients are equally as important. It is best to carefully examine these details before purchasing to avoid adverse reactions and wasted resources.

Look for the words "broad spectrum"

Dermatology experts say the skin needs protection from UVA and UVB rays because the ozone layer only filters out UVC, which has the shortest wavelength. UVB is responsible for sunburns, and UVA for tanning. While some purposefully tan themselves, experts warn that any form of tanning is already considered DNA damage, which has a high risk of resulting in skin cancer.

Check the SPF rating

Not all sunscreens have the same SPF rating. Some brands have SPF 15, others 30, and fewer brands have SPF 50. Experts say that even only a few minutes of sun exposure warrant the use of sunscreen. SPF 15 is acceptable for use when you are only under the sun for less than 30 minutes and when the sun is not at its peak. However, the Skin Cancer Foundation recommends using SPF 30 for prolonged sun exposure. SPF 50, on the other hand, has a slightly increased protection from sun damage, but it still won't completely block the UV rays.

Is it water-resistant?

Not all sunscreens are made water-resistant, so checking for this detail is crucial. If your chosen sunscreen is water-resistant, it will take a minimum of 40 minutes and a maximum of 80 minutes before reapplication. Yes, you need to reapply sunscreen now and then.

Other reminders not on labels

Other details are not usually found on labels such as FDA certifications or approvals.

Following the ban of several harmful active ingredients, it is most beneficial to know which are FDA-approved sunscreens. Because the labels do not usually show them, doing a quick search before buying the product could save your skin from unauthorized sunscreens. 

Another reminder from experts is to avoid relying on sunscreen alone. Aside from avoiding sun exposure during its peak, wearing long sleeves and using umbrellas could also minimize UV damage.