Do Face and Body Oils Cause Sunburn? Here's What the Science Says
If you love natural oils in your skincare routine, you've probably wondered whether they're safe to wear in the sun.
If you love natural oils in your skincare routine, you've probably wondered whether they're safe to wear in the sun. The internet doesn't make it easy to get a straight answer one corner insists oils are "nature's sunscreen," another warns they'll fry your skin the moment you step outside. The truth, as usual, is more specific than either extreme.
Most Natural Oils Won't Cause a Sunburn
Research reviewed by the Tisserand Institute confirms that the vast majority of plant oils used in skincare, shea, sunflower, sweet almond, olive, jojoba, safflower, coconut, argan, castor, evening primrose, borage, and rose hip, are simply not phototoxic.
Phototoxicity happens when certain compounds sit on the skin and react with UV light, intensifying burning and sometimes causing blistering or lasting discoloration. Fatty carrier oils like the ones above don't contain those compounds, so they won't trigger that reaction.
This holds true for the entire base blend used in Ellie Bianca's face and body oils.
Where Oils Actually Help: Calming Skin After Sun Exposure
Sun-exposed skin loses moisture and often ends up inflamed, tight, or red, and this is where the right oils genuinely earn their keep. According to research from Duke University Medical Center, a few ingredients are worth knowing about:
- Gamma-linolenic acid (GLA), found in oils like evening primrose and borage , is an omega-6 fatty acid recognized for calming inflammation and soothing irritated skin.
- Emollient oils like shea help rebuild a compromised moisture barrier, which matters a lot once skin has been dried out by sun and heat.
- Rose hip oil carries natural vitamin C and fatty acids that support the skin's own repair process.
- Vitamin E , a staple antioxidant in many facial oils (including every Ellie Bianca blend), helps offset some of the oxidative stress that UV exposure causes at a cellular level.
Working the right oil blend into an evening routine after a day outdoors is a genuinely sound way to support skin while it recovers.
The "Oils Boost Your Sunscreen" Claim,What's Actually True
This one deserves a closer look. Dr. Lucia Montenegro of the University of Catania, Italy, found that adding specific oils, shea oil among them, directly into a sunscreen's chemical formula, at very small concentrations, can modestly improve how much UV light the formula absorbs in lab testing.
That's a real, narrow finding about sunscreen manufacturing. If you enjoy a facial oil rich in antioxidants like vitamin E, that's a nice addition to your skin's overall resilience, but your actual sun protection should still come from a properly applied, reapplied broad-spectrum sunscreen.
A Different Kind of Risk: Oils Used to Maximize Sun Exposure
A study from the Department of Dermatology at Dokuz Eylul University points to a third category worth knowing about, and it works differently from either of the above.
Mineral oil, the base ingredient in classic baby oil, and often the carrier in old-school tanning oils, isn't phototoxic in the chemical sense. Instead, it changes how UV light interacts with the skin's outer layer, allowing more of it to penetrate rather than be reflected away.
Combine that with the fact that mineral oil offers no SPF of its own, and you have a real recipe for a fast, severe burn, dermatologists note it can happen in as little as 10 to 15 minutes.
This isn't a reason to be wary of nourishing oil blends generally; it's specifically about oils used deliberately to intensify sun exposure with no protection layered on top.
The Takeaway
Most face and body oils, including full ingredient blends like Ellie Bianca's , are not only safe to wear in daylight but can also be genuinely helpful for calming and replenishing skin that's had some sun.
And while the science on oils in sunscreen formulas is interesting, it doesn't mean oils can replace the sunscreen already in your routine.
Enjoy your oils for what they do well: nourishing, soothing, glow-supporting skincare, worn alongside good sun sunscreen rather than instead of it.
Give Your Skin Some Post-Sun Nourishment
Explore Ellie Bianca's collection of natural face and skin oils.
SHOP FACE OILSReferences
Fan, Y.Y. & Chapkin, R.S. (1998). Importance of dietary gamma-linolenic acid in human health and nutrition. Journal of Nutrition, 128(9), 1411–1414.
Miller, C.C. & Ziboh, V.A. (2002). Gamma-linolenic acid in borage oil reverses epidermal hyperproliferation in guinea pigs. PubMed ID: 12368400.
Lin, J.Y., Selim, M.A., Shea, C.R., et al. (2003). UV photoprotection by combination topical antioxidants vitamin C and vitamin E. Journal of the American Academy of Dermatology, 48(6).
Lin, J.Y., et al. (2008). A topical antioxidant solution containing vitamins C and E stabilized by ferulic acid provides protection for human skin against damage caused by ultraviolet irradiation. JAAD, 59(3), 418–425.
Belkhelladi, M. & Bougrine, A. (2022–23 review). Evolution of Post-Surgical Scars Treated with Pure Rosehip Seed Oil, reviewed in Dermatology Times, June 2026; original 108-patient trial on rosehip oil and post-surgical scarring.
Akarsu, S., Fetil, E., Ozbagcivan, O., & Gunes, A.T. (2018). Blocking or enhancing effects of some basic emollients in UVA penetration. Anais Brasileiros de Dermatologia, 93(2), 238–241.