Prostaglandin analogues are used to treat glaucoma. A side effect of these medicines is the darkening, thickening and lengthening of eyelashes. As such, some dermatologists will offer topical prostaglandin analogues for the treatment of eyelash or eyebrow loss in people with alopecia areata where eyelashes/eyebrows have been affected. Prostaglandin analogues include latanaprost and bimataprost.

When treating eyelashes, the treatment is only applied to the skin of the upper eyelid margin at the base of the eyelashes.

There is the possibility of irreversible discolouration of the iris and darkening of the skin of the eyelids.

Prostaglandin analogues might be prescribed to people with the following alopecia types: 

alopecia areata (where eyelashes or eyebrows are affected); frontal fibrosing alopecia (FFA - where eyelashes or eyebrows are affected)