How to choose the right sunscreen: Beware of these 12 common misconceptions

Sunscreen should be applied as a base layer before makeup for optimal sun protection. (Image: Canva)

Sunscreen is a crucial tool in protecting your skin from the harmful effects of the sun's ultraviolet (UV) rays. When selecting a sunscreen, there are a few key factors to consider. First, opt for a broad-spectrum sunscreen, which protects against both UVA and UVB rays.

Consider your skin type and any sensitivities you may have, opt for a formula that suits your needs, whether it's a lotion, cream, or gel. Additionally, water-resistant, or sweat-resistant sunscreens are ideal, especially if you'll be swimming or sweating. Finally, check the ingredients list and opt for sunscreens with physical blockers like zinc oxide or titanium dioxide, which provide effective and gentle protection.

As you select the right sunscreen, let’s also talk about 12 common misconceptions about sunscreen, and what you need to know about using sunscreen correctly.

Myth: Sunscreen is solely necessary on sunny days.

Fact: Contrary to popular belief, UV rays can penetrate clouds, causing skin damage even on overcast days, says dermatologist Ishita Rana, also the founder of Renewderm. Therefore, wearing sunscreen is crucial regardless of the weather.

Myth: Sunscreen prevents the body from absorbing vitamin D.

Fact: While sunscreen blocks UV rays, brief sun exposure still allows the body to produce vitamin D, says Rana. Just 5 to 30 minutes of daily sunlight exposure is sufficient for adequate vitamin D synthesis.

Myth: Sunscreen causes health problems.

Fact: Concerns about sunscreen ingredients, such as oxybenzone, are largely unfounded, says Rana. Extensive research has shown no evidence of harmful effects in humans at normal usage levels.

Myth: People with dark skin don't need sunscreen.

Fact: Despite having more melanin, darker skin tones are still susceptible to sun damage and skin cancer. Everyone, regardless of skin color, should use sunscreen regularly.

Myth: Tanning beds provide a protective base tan.

Fact: According to Rana, Tanning beds primarily emit UVA rays, which offer minimal protection against UVB-induced sunburns and skin damage. They do not provide adequate sun protection and may increase the risk of skin cancer.

Myth: Makeup alone is enough to protect the face.

Fact: While some makeup products contain SPF, they typically offer insufficient protection compared to dedicated sunscreens. Sunscreen should be applied as a base layer before makeup for optimal sun protection.

Myth: Sunscreen works better than covering up.

Fact: While sunscreen is crucial, covering up with clothing and hats provides additional protection against UV rays. Physical barriers are more effective than sunscreen alone.

Myth: You cannot tan while wearing sunscreen.

Fact: Sunscreen reduces but does not eliminate UV exposure, allowing for some degree of tanning. However, excessive sun exposure, even with sunscreen, increases the risk of skin damage and cancer.

Myth: All sunscreens are the same.

Fact: Different sunscreen formulations offer varying levels of protection and may contain different active ingredients. Choosing a broad-spectrum sunscreen with an SPF of 30 or higher is crucial for comprehensive sun protection.

Myth: One application of sunscreen lasts all day.

Fact: Sunscreen effectiveness diminishes over time, especially with exposure to water, sweat, and sunlight. Reapplication every 2 to 4 hours is necessary to maintain adequate sun protection.

Myth: Sunscreen is waterproof.

Fact: While some sunscreens are labeled as water-resistant, none are entirely waterproof, says Rana. Reapplication after swimming or sweating is essential for continued protection.

Myth: Sunscreen never expires.

Fact: Sunscreen efficacy diminishes over time, and expired products may provide inadequate protection, says Rana. Regularly check sunscreen expiration dates and replace expired products to ensure optimal sun protection.