What to Look for in a Sunscreen: A LifespanMD Guide

May 24

May is Melanoma and Skin Cancer Awareness Month, making it the perfect time to review one of the most important habits for long-term skin health: daily sunscreen use.

At LifespanMD, we believe prevention is a cornerstone of longevity - and when it comes to skin health, sunscreen is your first line of defence. But not all sunscreens are created equal. Here’s what to look for when choosing one that truly protects your skin.

1. Broad-Spectrum Protection

Look for the label “broad-spectrum.” This means the sunscreen protects against both UVA rays (which contribute to skin aging and melanoma risk) and UVB rays (which cause sunburns). A product that doesn’t protect against both isn’t providing full protection.

2. SPF 30 or Higher (Ideally SPF 50)

SPF (Sun Protection Factor) measures how well a sunscreen protects against UVB rays. An SPF of 30 blocks about 97% of UVB rays. Higher SPFs block more, but no sunscreen can block 100%. We suggested SPF 50. Reapply every 2 hours, especially if sweating or swimming.

3. Mineral vs. Chemical Sunscreens

Mineral sunscreens (also known as physical sunscreens) contain zinc oxide or titanium dioxide. They work by creating a physical barrier on the skin’s surface and are ideal for sensitive or acne-prone skin.
Chemical sunscreens absorb UV rays and convert them into heat. They are generally lighter in texture and blend more easily but can cause irritation in some individuals.

At LifespanMD, we often recommend mineral-based sunscreens for sensitive or post-treatment skin.

4. Cosmetic Elegance

Let’s face it - if it doesn’t feel good on your skin, you won’t wear it. Look for a texture that suits your skin type:

Matte finishes for oily skin
Hydrating lotions for dry skin
Tinted formulas for added glow and tone correction

Need help choosing the right one for your skin? Visit our friends at Dermapure Wellington Village - a trusted partner with expert staff and curated medical-grade skincare products.

Final Thoughts from LifespanMD

Daily sunscreen use isn’t just about avoiding sunburn—it’s about reducing your risk of skin cancer, preventing premature aging, and protecting your skin barrier over time. Think of it as a daily investment in your skin’s longevity.

Sam Hetz