One of many extra widespread on-line theories means that Dior’s lip oil acts as a “cooking agent” of types, catalyzing irritation. Dobos dismisses this as an exaggeration: “[On an average day,] you’re not attending to any form of temperature the place you’d be ‘cooking’ the pores and skin.” Dr. Gohara, alternatively, says, “Shiny lip merchandise can intensify UV publicity by performing like a magnifying glass. With out SPF, this will result in sun-induced pigmentation.” (The Dior lip oil doesn’t embody sunscreen substances.)
Some TikTok customers theorize the lip oil is inflicting “margarita burns”—a nickname for phytophotodermatitis, a pores and skin situation whereby sure substances (like lime juice) uncovered to gentle trigger a burn-like rash. That’s what Kavita Mariwalla, MD, a New York-based board-certified dermatologist, and Chesahna Kindred Weaver, MD, a Maryland-based board-certified dermatologist, each imagine is going on to those Dior clients. “Sure vegetation—particularly citrus fruits, celery, and carrots—may cause pigmentation modifications when uncovered to daylight,” Dr. Weaver says. “It’s the identical factor that occurs when somebody spills lime juice on their pores and skin whereas vacationing within the solar and develops a rash in that space.” The signs of the pores and skin situation Dior clients are reporting align vastly with the signs of the sort of rash, they each say.
However right here’s the place issues get a bit of complicated: Dior’s components doesn’t comprise lime juice or some other related fruit or vegetable juices, as Dobos factors out. Should you ask her, “That is extra possible about how sure substances are interacting with particular person sensitivities and solar publicity over time.”
What’s sure, although, is that continued use of the product even after delicate irritation has occurred is making the situation harder to deal with. “In melanin-rich pores and skin, something that irritates—pimples, bug bites, or on this case, a lip oil—may cause hyperpigmentation,” Dr. Weaver says. “When somebody continues to use the issue, the pigmentation deepens.” Dr. Mariwalla agrees: “The longer it persists, the more durable it’s to deal with.”
To forestall lip irritation like this, Dr. Gohara recommends sporting a lip balm with SPF each day, particularly underneath shiny lip merchandise. In case you are experiencing hyperpigmentation you assume could be brought on by extended use of Dior’s lip oil, she and Dr. Weaver each advise ceasing use and getting in contact with a health care provider. Dr. Mariwalla warns in opposition to the temptation to deal with the issue with aggressive exfoliants. “That always worsens the pigmentation,” she says.