Hypotrichosis is a term used by dermatologists to describe a lack of hair growth. It’s not to be confused with alopecia, which is where previous growth has been replaced by hair loss. Hypotrichosis affects the length, number, and texture of the hair, and people who are affected develop dry, coarse and sparse hair. The condition can affect hair anywhere on the body, including the eyelashes. As a result, patients usually have very thin, sparse eyelashes.
In many cases, hypotrichosis is hereditary, but it can also be caused by other factors including:
- hormonal changes (such as menopause)
- inflammation of the eyelids (a condition called blepharitis)
- allergies
- overuse of eyelash curlers

If you are dissatisfied with the appearance of your eyelashes and you have been diagnosed with hypotrichosis, you may be a candidate for the highly effective, prescription-only treatment known as Latisse.