BuzzFeed spoke to the eye doctor behind the TikTok: Dr. Brittani Carver-Schemper. She has been an optometrist for 20 years and is currently the co-owner of Better Vision Optometric Center in Fayetteville, North Carolina.

Spoiler: It can cause irreversible gland damage.
@bettervision Why not to wear eyeliner on your waterline. #eyeliner #eyehealth #dryeye #eyes #meexplaining #optometrist #MGD #PepsiApplePieChallenge
♬ FEEL THE GROOVE - Queens Road, Fabian Graetz
According to the doctor in the video, the oil in our eyelids is supposed to be the consistency of olive oil, but as you can see in the video above, this patient has oil that is the consistency of toothpaste.
@bettervision Why should not put eyeliner on the waterline. #makeup #makeuphacks #eyedoctor #eyeheath #eyeliner #beauty
♬ Send Me on My Way - Vibe Street
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Contact Krista Torres at krista.torres@buzzfeed.com.
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