Bimatoprost: Uses, How to Use, and What to Watch For
Bimatoprost is a prescription medicine used mainly to lower eye pressure in glaucoma and to grow eyelashes. You may know it as Latisse when used for lashes. It works by increasing fluid outflow from the eye and by stimulating hair growth on the eyelid margin.
For glaucoma or ocular hypertension, your doctor will prescribe bimatoprost eye drops to reduce pressure and lower risk of vision loss. Apply the drop once daily in the evening—using it more often won’t help and can increase irritation. If you wear contact lenses, remove them before applying and wait 15 minutes to reinsert.
When used for lashes, a tiny amount is applied to the skin at the base of the upper lashes once a day, usually at night. Use the applicator supplied and avoid getting the solution in the eye. Expect gradual changes: many people see fuller lashes after 8–12 weeks and full effect by 16 weeks.
Side effects and safety tips
Common side effects include mild eye redness, itching, and dry eyes. Some people notice darkening of the eyelid skin or permanent iris color change—this is more likely with long-term use and can be permanent. Report any sudden eye pain, vision changes, or signs of infection right away.
Do not use bimatoprost if you have a serious eye infection or an allergy to the drug. Tell your doctor about pregnancy, breastfeeding, or if you take other eye medicines. If you stop using bimatoprost, pressure in the eye or lash effects will likely return to baseline over time.
Smart tips for buying and using bimatoprost
Bimatoprost requires a prescription in many countries. Use a licensed pharmacy or verified telehealth service to get it. Watch for counterfeit products online—look for clear labeling, a pharmacist contact, and a valid prescription policy. Keep the bottle capped and store at room temperature away from light.
Measure drops carefully. For lashes, less is more: one small stroke along the upper lid is enough. If you use other eye drops, wait 5–10 minutes between products. Keep a treatment diary to track results and side effects—take photos every few weeks if you’re monitoring lash growth or skin changes.
If cost is a concern, ask your prescriber about generic bimatoprost options or patient assistance programs. Some manufacturers offer savings programs for eyelash products. Never share eye medications with others; infections can spread and dosing needs differ.
Questions for your doctor: Is bimatoprost right for my eye pressure or cosmetic goal? How long should I use it? What should I watch for between visits? Bring a list of current medicines and a photo of your eye color if you’re worried about long-term changes. A short conversation can prevent surprises.
Keep follow-up appointments so your doctor can check eye pressure and look for side effects. If you switch brands or pharmacies, compare active ingredient strength and expiry dates. Parents using bimatoprost on teens should discuss risks openly. If you notice permanent color change or severe irritation, stop use and contact your eye specialist immediately now.
