✅ Medically reviewed by Dr Tom Walker – 18/02/2026
If you’re researching for “bimatoprost lash growth”, you’re likely trying to understand one key question:
Is bimatoprost just another generic ingredient or is it something different?
The short answer is that bimatoprost is more than a vitamin or peptide. It is a prostaglandin analogue. Solutions containing bimatoprost have been clinically proven to stimulate eyelash growth.
In contrast, most lash serums available in UK shops and online are cosmetic conditioners with no clinically proven results.
This guide explains the differences clearly so you can make an informed decision.
What is the bimatoprost?
Bimatoprost is a prostaglandin analogue. A 0.03% solution of bimatoprost can be used under consultation with a doctor to enhance eyelashes. Bimatoprost was originally developed to treat glaucoma and used as an eye drop. During clinical use doctors noticed a consistent side effect with this eye drop: longer, thicker and darker eyelashes.
The US Food and Drug Administration (FDA) subsequently approved its use for eyelash growth in 2008.
In the UK bimatoprost was originally licensed for glaucoma and has since been prescribed off-label for eyelash growth under medical supervision.
At MyLash we prescribe bimatoprost and other treatments through our doctor-led service that has operated since 2007.
What Are Lash Serums?
Most “lash serums” sold in the UK are cosmetic conditioning products that cannot claim to cause eyelash growth.
They typically contain:
- Peptides
- Biotin
- Panthenol
- Plant extracts
- Conditioning agents
These ingredients may improve shine, breakage resistance and nourish the follicle but they do not alter the hair growth cycle in the way that bimatoprost does.
If a product can be sold freely without a prescription, it is unlikely to contain a clinically active ingredient that can actually stimulate growth.
| Feature | Clinically Proven Treatment | Cosmetic lash serum |
|---|---|---|
| Active ingredient | Bimatoprost 0.03% | Peptides, conditioners |
| Stimulates growth? | Yes | No |
| Evidence | Clinical trials | No clinical trials |
| Requires doctor | Yes | No |
| Available in Boots? | No | Yes |
How Does It Work?
Bimatoprost works by extending the anagen (growth) phase of the hair growth cycle. This increases the growth activity in your eyelash and eyebrow follicles, resulting in hair that is longer and thicker than before. This allow causes increased pigment in the hairs, making the lashes and brows appear darker.
In FDA trials, eyelashes treated with bimatoprost were on average 106% thicker, 25% longer and 18% darker than before.
Cosmetic serums cannot replicate this effect because they do not influence the follicle’s growth cycle.
Why Isn’t Bimatoprost Sold as a Standard Lash Serum in the UK?
In the UK, medicines are licensed by active ingredient, not brand name. Because bimatoprost 0.03% is a prescription only medicine it cannot be sold over the counter.
Is Bimatoprost Stronger Than Lash Serums?
Bimatoprost 0.03% solution is prescription strength with clinical trials to prove that it works, whereas over the counter serums are cosmetic conditioners.
For women with naturally short lashes, age related thinning of lashes or brows, lash loss from the overuse of extensions or plucking, or recovering from thyroid problems, then a stronger treatment may provide more noticeable change.
For women simply wanting healthier looking lashes without medical treatment, a conditioning serum may be enough.
Which Option Is Right for You?
If you want:
- Conditioning → cosmetic lash serum
- Clinically proven growth stimulation → bimatoprost or equivalent treatment.
If you would like medical advice, our doctors can review your suitability confidentially online.
Our Clinical Approach
We take a cautious, evidence-led approach to eyelash regrowth.
- All treatments require a medical consultation which we provide as part of our service
- Prescriptions are issued by UK-registered doctors
- Dispensing is carried out by UK pharmacies
Founded in 2007, MyLash was the first UK services to make effective lash growth treatments available in Europe. Our team has helped tens of thousands of clients achieve longer, thicker lashes under medical supervision.
We have been featured in multiple UK magazines and newspapers, recognised for our scientific approach to lash and brow growth.
Why Choose MyLash?
- Doctor-prescribed treatment
- Home delivery anywhere in the UK
- Established since 2007, trusted by thousands
- Featured in major UK publications
- Scientifically led, developed by Dr Tom Walker and run by a team of UK doctors
If you’re looking for bimatoprost in the UK, remember: Boots doesn’t sell it, but you can safely and conveniently obtain it here from Mylash, the UK’s specialist eyelash growth clinic.
Frequently Asked Questions
The short answer is that bimatoprost is more than a cosmetic lash serum. It also has other uses including as glaucoma treatment.
Bimatoprost alters the hair growth cycle and has clinical trial evidence. Most lash serums condition existing hairs but do not stimulate growth.
No. Bimatoprost is prescription-only in the UK.
Some cosmetic serums contain prostaglandin derivatives, but they are not regulated as medicines and may vary in concentration and safety.
Most users notice changes within 4–8 weeks, with full results around 16 weeks.
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