✓ Medically reviewed by · Last reviewed: May 2026
Pharmacy Researcher · 8 years experience
Pharmacy researcher with 8 years reviewing clinical drug information, generic formulation equivalence, and international pharmaceutical standards. Focuses on patient-facing accuracy in medication education.
- Latisse and Careprost contain the same active ingredient — bimatoprost 0.03 % — at the same concentration. The drug molecule is identical.
- Latisse is Allergan’s FDA-approved prescription product specifically approved for eyelash growth. Careprost is an Indian-made version approved for glaucoma, with eyelash growth as an off-label use.
- The main differences are regulatory approval, packaging, applicator, and price — not the active drug itself. Careprost is usually 3–5× cheaper.
- Both work by extending the anagen (growth) phase of eyelash follicles. Visible results appear around 8–12 weeks and maximise at 16 weeks.
- Side effects are the same for both: eye redness, itching, darkening of the skin around the eye, and — rarely — permanent darkening of a light-coloured iris.
Latisse and Careprost share one active ingredient
Both products are bimatoprost 0.03 % solutions — the same prostaglandin analogue, the same concentration, the same pharmacological effect. A comparison of their official packaging confirms identical active ingredient and strength:
| Latisse | Careprost | |
|---|---|---|
| Active ingredient | Bimatoprost 0.03 % | Bimatoprost 0.03 % |
| Inactive ingredients | Benzalkonium chloride, sodium chloride, citric acid, sodium phosphate, water | Same (ophthalmic vehicle) |
| Manufacturer | Allergan Aesthetics (AbbVie) | Sun Pharma (generic) |
| Country of approval | US, Canada, parts of EU — FDA-approved for lash growth | India — approved for glaucoma; off-label for lashes |
| Prescription required | Yes | Yes in licensed pharmacies |
On this site, Careprost Eye Drops with Brush is the standard preparation and includes brush applicators in the pack. Careprost Plus Eye Drops is the same bimatoprost 0.03 % formulation in a slightly different pack.
How bimatoprost grows eyelashes
Bimatoprost is a prostaglandin F2α analogue. It was originally developed to lower intraocular pressure in glaucoma. Dermatologists noticed — and patients quickly noticed themselves — that glaucoma patients using bimatoprost were growing noticeably longer, darker eyelashes on the treated eye. Allergan eventually developed Latisse (0.03 % bimatoprost in a cosmetic applicator format) for this dedicated use.
At the follicle, bimatoprost does three things:
- Extends the anagen (active growth) phase of the eyelash cycle. Normally anagen lasts 4–6 weeks in eyelashes; bimatoprost prolongs it, so hairs grow longer before they fall out.
- Increases the proportion of follicles in anagen at any one time. More hairs growing simultaneously means visibly thicker-looking lashes.
- Increases melanin production in the follicle, making new hairs darker.
Because the mechanism depends on repeated daily dosing affecting each follicle over its natural cycle, results take weeks to emerge. Most users see early changes at 4 weeks, meaningful changes at 8 weeks, and peak effect around 16 weeks of daily use.
The regulatory difference — the real point of this comparison
Here is where the two products genuinely diverge:
- Latisse went through FDA’s New Drug Application process for cosmetic eyelash indications in 2008 and was approved in December of that year. It is the only prescription eyelash product FDA-approved specifically for “hypotrichosis of the eyelashes.”
- Careprost is approved in India and many Asian markets for glaucoma and ocular hypertension. It is not approved for cosmetic eyelash use by any Western regulator. Its use for eyelashes is considered off-label.
What this means in practice:
- Latisse undergoes US-level Good Manufacturing Practice (GMP) inspections aimed at cosmetic use standards.
- Careprost undergoes Indian regulatory inspections (CDSCO, WHO-GMP) aimed at ophthalmic glaucoma use standards. Both are legitimate and rigorous for their intended market, but the target specifications differ slightly.
- Latisse comes with an FDA-approved patient information leaflet explaining lash-growth use; Careprost’s leaflet focuses on glaucoma administration.
The drug molecule is the same. The regulatory packaging is different.
The price difference
This is the factor that makes most users consider Careprost. Typical retail prices (2026):
| Product | Typical price | Lasts | Effective cost per month |
|---|---|---|---|
| Latisse 3 mL (5 mL available) | US$ 120–180 | ~30 days | US$ 120–180 |
| Careprost 3 mL | US$ 15–30 | ~30 days | US$ 15–30 |
Over a full year of daily use, the Latisse bill is roughly US$ 1,500–2,000 versus US$ 180–360 for Careprost. For a product that requires ongoing use to maintain results, this difference becomes substantial.
Packaging and applicator — the small practical differences
Latisse
- Single-use disposable sterile applicators, one per eye per day.
- Pre-packaged cosmetic-format kit with clear lash-growth instructions.
- Applicators are firm, designed for precise single-line application at the lash base.
Careprost
- Eye-drop bottle with a dropper; some packs also include reusable brush applicators.
- Packaging follows glaucoma format (dropper for into-the-eye use); adapting for lash-base use is the user’s job.
- Many users buy separate disposable applicators (eyeliner brushes, micro-brushes) for hygiene.
Hygienically, single-use applicators are superior because they eliminate the reinfection risk that comes from a reused brush dipped back into the bottle. Some users buy Careprost and a pack of disposable micro-brushes, getting the best of both.
Are they equally effective?
The main situations in which results differ between brands in practice:
- Counterfeit product. Cheap online sellers claiming Careprost may ship diluted or substituted product. This is a supplier issue, not a drug issue. Buy from licensed pharmacies with verifiable sourcing.
- Expired or improperly stored product. Bimatoprost is stable but loses potency if exposed to heat or long storage. Both brands are affected equally.
- Inconsistent application technique. Users who skip days or apply too little will get weaker results with either brand.
How to apply bimatoprost for eyelash growth
- Clean your face. Remove makeup and wash with a mild cleanser. Pat dry. Contact lenses should be removed and reinserted no sooner than 15 minutes after application.
- Apply one drop to the applicator. Do not drop into the eye itself. A single drop is sufficient for one upper lash line.
- Draw a single fine line along the upper lash base. From the inner corner outward, as you would apply eyeliner. Any excess should be blotted away.
- Discard the applicator. Do not reuse a disposable applicator for the other eye — use a fresh one. If using a reusable brush, clean it with alcohol between uses.
- Do not apply to the lower lash line. Reflux into the eye causes irritation and unwanted lower-lid skin darkening.
- Apply once nightly. More frequent application does not increase efficacy and raises side-effect risk.
- Continue daily. Missing a few applications a month is usually fine, but stopping entirely causes results to reverse gradually over 1–2 months as the hair cycle returns to baseline.
Side effects and risks (same for both products)
Common, generally mild:
- Eye redness or itching in the first weeks
- Darkening of the skin near the lash line (usually reverses when discontinued)
- Dry eyes or a gritty sensation
- Unexpected eyelash growth in areas where the drop has reached — lower lid, outer corner skin
Uncommon but important:
- Mild temporary blurring of vision immediately after application
- Allergic reaction — stop if significant swelling, burning, or rash occurs
- Corneal irritation (more likely with contact lens use too soon after application)
Rare but potentially permanent:
- Iris darkening — see the next section. The only truly permanent side effect.
- Periorbital fat atrophy — loss of fat pad around the eye, causing sunken-eye appearance. Reported mostly in long-term glaucoma use and slowly reversible after discontinuation.
Iris darkening — what’s actually known
The iris-darkening warning is the headline risk most users have heard about. What is actually known:
- Prostaglandin analogues (including bimatoprost) can stimulate melanocytes in the iris to produce more melanin, causing gradual, often permanent darkening.
- Affects people with hazel, green, or mixed-colour irises more than those with uniformly blue or uniformly brown irises.
- Rates in glaucoma trials (where the drop goes directly into the eye) were reported around 1–7 % over months to years.
- When applied to the lash base rather than into the eye, the risk is substantially lower — but not zero, because some product reaches the eye surface via tear-film migration.
Anyone with mixed-colour irises who wants to avoid this risk should consider either accepting it, choosing a different lash product (eyelash extensions, non-bimatoprost serums), or speaking to an ophthalmologist.
Frequently asked questions
Is Careprost just a cheaper Latisse?
Same active ingredient (bimatoprost 0.03 %) at the same concentration. The practical differences are regulatory status, manufacturer, packaging, and price — not the drug itself.
Is Careprost FDA-approved for eyelash growth?
No. Careprost is approved in India for glaucoma. Its use for eyelash growth is off-label. Latisse is the only FDA-approved prescription eyelash-growth product.
Will Careprost work as well as Latisse?
In most users, yes — because the active drug is the same. Large user populations report similar results. The main risks are counterfeit or improperly stored product from unlicensed sources.
Do I need a prescription for Careprost?
Prescription-only in licensed pharmacies in most countries. Some online sellers offer it without prescription, but those sources carry product-quality risks.
How long until I see results with either product?
Visible thickening in 4–6 weeks, meaningful length in 8–12 weeks, peak effect around 16 weeks. Consistency matters — daily application for at least 12 weeks is needed to evaluate.
What happens if I stop using it?
Results gradually reverse as the hair cycle returns to baseline. Lashes return to pre-treatment length and density over roughly 1–2 months.
Can I use Careprost if I wear contacts?
Yes — remove contacts before applying and wait at least 15 minutes before reinserting. The preservative (benzalkonium chloride) can be absorbed by soft contacts.
Can I use Latisse or Careprost on my eyebrows?
Off-label, yes — many users do. Apply sparingly with a brush or cotton swab. Effect is slower than on lashes because eyebrow hair has a longer natural cycle.
Is the skin darkening around my eyes reversible?
Usually yes. Most users see the periorbital hyperpigmentation fade over several weeks to months after stopping. Iris darkening is not reversible.
Can men use it?
Yes — the mechanism is the same in all adults, and there are no sex-specific contraindications. Men commonly use bimatoprost for lashes or beard sparse-patch fill-in (off-label).
Written by
Sophie ChenPharmaceutical Content Researcher · 8 years experience
Sophie Chen is a pharmaceutical content researcher with 8 years covering generic medication access and clinical pharmacology. She specialises in international regulatory frameworks, bioequivalence standards, and patient-facing education on therapeutic drug classes. She is not a clinician.