Your skincare routine might be on point.. cleansers, serums, moisturizers, sunscreen but here’s a little truth bomb: slathering oils before extended sun exposure is a no-go. I’ve been there thinking oils are the ultimate hydration hack but in blazing heat, they can actually make your skin fry. Not dramatic, just the mild burns, redness, hyperpigmentation, and even sunspots that sneak up on you over time.
Let’s be real: oils feel protective. They’re cozy, comforting, and honestly, I’ll forever be an advocate for using them as a barrier or sealant. But when you’re planning to be out in the sun for hours, like at the beach or running errands during peak UV, oils stop being your skin’s friend. Instead of a glow, you risk heat-trapped skin that can flare, burn, or leave lingering pigmentation.
So, if you want to keep your skin safe, hydrated, and radiant, here’s why you should never reach for oils under scorching sun, and what to do instead.

How Oils Interact With Sun Exposure
Oils Trap Heat
Think of oils as a cozy, insulating layer. Great for indoors or nighttime, but under direct sun? They trap heat against your skin. That warmth can accelerate mild burns, trigger redness, and irritate sensitive skin. It’s like wearing a blanket in a sauna your skin isn’t thanking you for it.
Risk of Hyperpigmentation and Sunspots
UV exposure combined with oils can intensify pigment formation. You might notice uneven patches, dark spots, or blotchiness over time. Those “sun-kissed” spots? Often a sign your skin tried to protect itself while oils just amplified the sun’s effect.
Redness and Irritation
Some oils, especially thicker ones like coconut or avocado, can worsen skin flare-ups. They trap sweat, heat, and UV stress, which leads to redness, tiny bumps, and overall irritation. Your “healthy glow” can quickly turn into a hot, irritated mess.
Oils Are Not Sunscreen
Here’s the hard truth: no matter how natural or luxurious an oil feels, it cannot block UV rays. SPF is non-negotiable. Even if your oil has antioxidants, they can’t replace the physical and chemical defense that sunscreen provides.
If you layer sunscreen over oil, absorption can be compromised. Your skin might look shiny, but protection? Minimal. Bottom line: sunscreen first, oil later. Always.

When Oils Are Perfect
Now, don’t get me wrong I will always champion oils. They’re amazing for:
- Locking in hydration: apply after cleansing or after a serum to seal moisture.
- Post-sun care: soothe and replenish skin after exposure.
- Evening barrier: keeps your skin calm overnight and protects against dryness.
Think of oils like a protective jacket, but not for direct, prolonged sunlight… they’re better for after-the-sun TLC, not before.
What to Use Instead for Extended Sun
When you know you’ll be in the sun for hours:
- Stick to lightweight lotions or gels: absorbs fast, doesn’t trap heat.
- Always apply broad-spectrum sunscreen with SPF 30 or higher.
- Reapply every 2–3 hours, especially after sweating or swimming.
If you crave hydration, use water-based serums or moisturizers under sunscreen. Your skin gets the support it needs without risking heat traps or burns.
My Personal Take
I used to swear by coconut oil before beach days. By mid-afternoon, my skin was hot, tight, and pinkish, and I ended up with some stubborn pigmentation that lingered for weeks. After switching to a sunscreen-first, lotion + oil-later routine, my skin stayed calm, hydrated, and protected even under the same blazing sun.
Lesson learned: oils are amazing, but not in prolonged direct sun. They’re your ally after sun exposure, indoors, or at night, but for extended outdoor hours? Hard pass.
Key Takeaways
- Oils trap heat, increasing the risk of burns, redness, and irritation.
- Prolonged sun exposure + oils = hyperpigmentation, sunspots, and uneven tone.
- Always prioritize lotions and sunscreen for extended sun time.
- Oils remain incredible as a hydration barrier or sealant, just not before long sun exposure.
Final Thoughts
I love oils. Seriously, I will always defend them as one of the best tools for locking in moisture and keeping skin supple. But if you’re spending hours under blazing sun, don’t test your luck. Choose sunscreen first, then your oils after, and your skin will thank you with calm, even, and radiant tone.
Think of oils like dessert they’re amazing, indulgent, and protective in the right context, but you wouldn’t eat cake before a marathon, right? Same with oils under the sun: timing is everything.



