@dr_brace: Tears have three layers - The tear film includes an oily layer that reduces evaporation, a watery layer that hydrates, and a mucous layer that helps tears adhere to the eye. #foryou #foryoupage #ScienceFacts #usa #health #facts

Dr. Brace
Dr. Brace
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Sunday 01 February 2026 02:15:34 GMT
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