Kohl, a mineral powder applied to the eye, is full of benefits.
Ibn al-Qayyim tells us that it preserves the health of the eye, strengthens the light of the gaze, improves eyesight, thins out harmful matter and clears it away, while also serving as an adornment for some. The Prophet ﷺ used to apply it three times in each eye before sleeping, which makes it even more beneficial.
Ibn 'Abbas reports that the Prophet ﷺ said:
"Use the stibium, for it improves eyesight and makes the eyelashes grow."
Sahih At-Targhib – 2104.
Kohl is also antibacterial and antiseptic, strengthens and improves eyesight, and can be used to treat styes or conjunctivitis. In addition, this mineral powder is widely used in cosmetics.
It is recommended to apply kohl an odd number of times, in the manner of the Prophet ﷺ, that is, three times in each eye.
What the science says: eyes
What published research says about the remedies mentioned above, for context — the studies address material causes, while healing belongs to Allah.
The eyes
Omega-3s improve dry eye according to meta-analyses (J Clin Med, 2023) (Med Sci Monit, 2014); lutein, zeaxanthin, and beta-carotene protect the retina (Antioxidants, 2020) and a diet rich in antioxidants is associated with fewer cataracts (Nutrients, 2023). Kohl (genuine ithmid) is the eye care of the Sunnah. Precaution: never put anything in the eye that is not sterile or whose composition is unknown; a sudden drop in vision, or a red and painful eye, are emergencies.
