If you've noticed that over-the-counter lash serums offer limited results, you might be looking for the "secret" to the dramatic, long lashes you see in advertisements. That secret is often a prescription-strength medication. Careprost is one such product, containing the active ingredient bimatoprost. It is not a cosmetic; it is a genuine medical drug with a fascinating origin story that explains both its power and its risks.
Careprost is, by design, an eye drop for treating glaucoma (high pressure in the eye). Its ability to grow eyelashes was discovered as a side effect. This means when you use it for lashes, you are using it "off-label"—a common practice, but one that requires you to be fully informed.
The Biological "Overtime": How It Forces Growth
Unlike cosmetic serums that condition the lashes, Careprost fundamentally alters their growth cycle. Think of each eyelash follicle as a tiny factory with a set work schedule (the "growth phase").

A Short Natural Schedule: Normally, this growth phase for eyelashes is very short, which is why they don't grow as long as the hair on your head.

Forcing the Factory into Overtime: Bimatoprost acts like a powerful biological signal that tells the follicle "factories" to ignore their normal schedule and keep working. By extending this growth phase, it forces the lashes to grow longer, thicker (by waking up more follicles), and darker.
This is why the results are so dramatic and consistent—it's not an illusion, it's a forced biological change.
The Non-Negotiable Risks: The "Price" of Using This Drug
Because you are using a potent glaucoma medication for a cosmetic purpose, you must accept the known trade-offs. These are not rare possibilities; they are well-documented effects of the drug.

Irreversible Iris Darkening: This is the most serious risk. The pigment in the colored part of your eye (the iris) can increase, permanently turning blue, green, or hazel eyes a darker shade of brown. [b]This is permanent.

The change is irreversible even after you stop using the product.

Skin Discoloration: You may notice a darkening of the eyelid skin where the product is applied. This is usually reversible, but it's a common side effect.

Unintended Medical Effects: You are applying a drug designed to lower eye pressure directly next to your eye. Using it without a doctor's guidance means you are altering your eye's physiology without professional oversight. This is not a simple beauty product.
In essence, Careprost works because it's a powerful drug. And because it's a powerful drug, its use demands a serious and informed acceptance of its potential to cause permanent changes.
For more detailed information, please follow the link: https://www.imedix.com/drugs/careprost/