Testing how eyeliner changes eye tears
Part of Eyes & vision clinical trials.
This study compares how eyeliner affects your tears—like tear makeup, how much your eyes produce, and how long the tear layer stays stable. You might help researchers understand whether eyeliner use impacts eye comfort or dryness.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You are between 20 and 35 years old
- You either currently use eyeliner or do not use eyeliner
- If you use eyeliner, you’ve used it for at least 1 year and at least 3 times per week
- You do not have serious general health problems or immune system conditions affecting the eyes
- You have no history of eye surgery or eye injury/trauma
- You must not be pregnant or breastfeeding, and you do not have certain sleep/circadian rhythm problems
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
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