Sunscreen Is the Most Skipped Step — But Shouldn't Be
Despite being one of the most well-researched and evidence-backed skincare products available, sunscreen is still widely misunderstood. Myths around who needs it, when to use it, and how much SPF matters prevent many people from using it properly — or at all. Let's clear the record.
Myth 1: "I Don't Need Sunscreen on Cloudy Days"
False. Up to 80% of UV rays penetrate cloud cover. Overcast days can actually be deceptive because you don't feel the warmth of the sun — but UVA radiation (which causes skin aging and DNA damage) reaches the ground regardless of cloud cover. Wear SPF every morning, rain or shine.
Myth 2: "Dark Skin Tones Don't Need SPF"
False — and harmful. While melanin provides some natural protection, it is nowhere near sufficient to prevent UV-induced skin damage, hyperpigmentation, or skin cancer. People with darker skin tones are less likely to burn visibly, which can create a false sense of security. Dermatologists universally recommend SPF for all skin tones. Darker skin is also particularly prone to post-inflammatory hyperpigmentation, which UV exposure worsens significantly.
Myth 3: "SPF in My Makeup Is Enough"
Not quite. The SPF rating on a foundation or powder only provides its stated protection if you apply it in the same quantity as a sunscreen — which is roughly a quarter teaspoon for the face. In reality, most people apply far less makeup than that, which means the actual SPF you're getting is much lower. Use a dedicated SPF product as your final skincare step and treat makeup SPF as a bonus, not a replacement.
Myth 4: "You Only Need to Apply Sunscreen Once"
Incorrect. Most sunscreens — especially chemical (organic filter) sunscreens — degrade with UV exposure and sweat over time. Reapplication every two hours of sun exposure is the general recommendation, especially if you're swimming or sweating. For an office day with minimal direct sun exposure, morning application may be sufficient — but if you're outdoors, reapply.
Myth 5: "Higher SPF Means Proportionally More Protection"
Partially true, but often misunderstood. The jump from SPF 15 to SPF 30 is meaningful (SPF 15 blocks about 93% of UVB rays; SPF 30 blocks about 97%). But the jump from SPF 50 to SPF 100 is quite small. No sunscreen blocks 100% of UV rays. The bigger factors are whether you apply enough and whether you reapply as needed. An SPF 30 applied generously outperforms an SPF 100 applied sparingly.
Myth 6: "Sunscreen Causes Vitamin D Deficiency"
Largely a concern without much real-world support. Studies consistently show that regular sunscreen use does not cause clinically significant Vitamin D deficiency. The body produces Vitamin D very efficiently, and even with sunscreen applied, incidental sun exposure to hands and arms throughout the day typically produces adequate amounts. If you're concerned about Vitamin D levels, dietary sources and supplementation are reliable options.
Myth 7: "Natural Sunscreens Are Safer Than Chemical Ones"
It's more nuanced than that. "Natural" mineral sunscreens (zinc oxide, titanium dioxide) and "chemical" sunscreens are both considered safe by major dermatological organizations. Mineral sunscreens sit on top of the skin and reflect UV rays; chemical sunscreens absorb UV and convert it to heat. Some people prefer mineral formulas for sensitive skin since they're less likely to cause irritation. The best sunscreen is the one you'll actually wear daily.
Quick SPF Checklist
- ✔ Use at least SPF 30 broad-spectrum (protects against both UVA and UVB)
- ✔ Apply as the last step in your morning skincare, before makeup
- ✔ Use about a quarter teaspoon for your face and neck
- ✔ Reapply every 2 hours if you're spending time outdoors
- ✔ Wear SPF year-round, not just in summer
- ✔ Don't forget ears, the back of the neck, and the tops of hands
Sunscreen is the closest thing skincare has to a universally agreed-upon essential. Getting the facts right means you can use it more effectively — and actually protect the skin you're working so hard to care for.