Allergan

Allergan Latisse.

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About this product

Latisse is a prescription-strength eyelash serum containing bimatoprost, a prostaglandin analog designed to lengthen, thicken, and darken eyelashes.

Guru Score

56%

Mixed

3 experts · Moderate agreement

What the gurus are saying

Latisse does grow lashes visibly, but the permanent darkening of the iris it can cause gives experts pause. One dermatologist notes this side effect is rare with eyelash serums but irreversible if it happens, and now recommends peptide-based alternatives instead. Another expert confirms the iris darkening risk is real and warns that some people also experience darkening around the eyelid where the serum is applied, though that can sometimes fade when you stop. The key: apply only to the upper lash line, never the under-eye, to lower that risk.

Synthesized from 3 expert reviews · most recent take May 2026

What they liked

Clinically proven to grow lashes

What they flagged

Risk of permanent iris darkening
Can darken skin around the eye

Type

Drops & dropper

Where to buy

Amazon → Google →

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What the gurus are saying.

Every take we've logged from this product's reviews across YouTube. Click any row to watch the moment they said it.

All takes Yay takes Nay takes Mixed takes Hide sponsored

Dr. Mamina

282k subs

~Nay

"The concerning thing about this side effect is that if it does happen, it's permanent. [...] It's usually more common in green or hazel eyes, and people end up getting a brown speck in their eye. I used to recommend these eyelash serums because for a long time they were the only options with real efficacy, but that has changed. There are now lash serums that grow lashes through different mechanisms and they are mostly peptide-based without the prostaglandin risks, and those are what I recommend."

Cassandra Bankson

2.46M subs

~Mixed

"Latisse is the brand name and Allergan is the parent company. This happens to be bimatoprost, which is the active ingredient inside of this, and this is actually the prostaglandin analog that is doing the work. [...] Even though when they were using these eye drops and testing them and finally got them for over-the-counter use, people also started noticing other side effects, and that's why you always hear Latisse being advertised like on TV and it's like might cause darkening of the eye."

The Budget Dermatologist

724k subs

~Nay

"Patients get red eyes from vasodilation of blood vessels, [...] discoloration of the eyelid skin from increased melanin production in [...] about 18 percent of patients, and about 10 to 15 percent will get red eyes. Other side effects include discoloration of the iris [...] and permanent eye color change in 3 to 8 percent of patients. [...] The most concerning side effect is prostaglandin-associated periorbitopathy, which causes fat atrophy around the eyes."

Frequently asked.

What is Allergan Latisse?

Latisse is a prescription-strength eyelash serum containing bimatoprost, a prostaglandin analog designed to lengthen, thicken, and darken eyelashes.

Is Allergan Latisse worth it?

The gurus are split. 0 of the 3 gurus give it their stamp of approval while 2 would skip it, which lands it in the middle at a Guru Score of 56%.

What is Allergan Latisse's Guru Score?

Allergan Latisse holds a Guru Score of 56%. That is our read on how warmly the experts talk about it, based on the verdicts of 3 expert reviewers we have collected.

Allergan Latisse.

56%

What the gurus are saying.

What the evidence says.

Frequently asked.

What is Allergan Latisse?

Is Allergan Latisse worth it?

What is Allergan Latisse's Guru Score?

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