Latisse Lash Serum: Dosage and Application for Best Results

✅ Medically reviewed by Dr Tom Walker – 06/05/2026

If you have already heard about Latisse lash serum, you probably know that it is not a typical cosmetic eyelash serum. Latisse contains bimatoprost 0.03%, a medically active ingredient that was first developed for glaucoma and later approved for eyelash growth.

The key to getting the best result is not using more product. It is using the right amount, in the right place, consistently over time.

This guide explains how Latisse is normally applied, why once-daily use is standard, what mistakes to avoid, and how MyLash provides the same clinically proven bimatoprost based treatment through a UK doctor led service.

What Is Latisse Lash Serum?

Latisse is the American brand name for bimatoprost ophthalmic solution 0.03%. It is approved by the US Food and Drug Administration for eyelash hypotrichosis, which means inadequate or insufficient eyelashes. The FDA label states that Latisse increases eyelash growth, including length, thickness and darkness.

In the UK the Latisse brand itself is not the usual way patients access treatment. Instead, the active ingredient bimatoprost is prescribed under medical supervision.

At MyLash, we have offered bimatoprost based eyelash growth treatment since 2007. MyLash was the first company in Europe to offer this treatment, and we remain focused on safe, doctor-led eyelash and eyebrow growth.

How Often Should Latisse Be Applied?

Latisse is normally applied once daily, in the evening, to the skin of the eyelid margin at the base of the eyelashes. It is not intended to be applied directly into the eye or to the lower lash line.

This is important because many people assume that using more often will improve results. In reality, bimatoprost does not work like a moisturiser. It acts on the hair follicle growth cycle. Once the follicle has been exposed, applying extra product does not necessarily produce better growth, but it may increase the chance of irritation.

In practice, we recommend applying it to clean skin after you have removed any makeup. This allows for maximum absorption as any makeup or moisturisers can act as a barrier, preventing it from soaking into the hair root.

The treatment is water based so it dries quickly. If you apply it then brush your teeth, you will find that it has completely absorbed. Afterwards you can then apply any night creams without interfering with its action.

Why Once Daily Is Enough

Bimatoprost works by prolonging the anagen phase which is the active growth phase of the eyelash cycle. Over time this allows lashes to grow longer, thicker and darker.

The effect is gradual. It depends on the normal biology of the follicle rather than an instant surface effect on the hair shaft. This is why consistency matters more than quantity.

Most users should think of treatment as a daily routine, like brushing teeth or applying a night cream. One careful application each evening is better than irregular, excessive use. It truly is a case of “less is more”.

Step by Step Application

Common Application Mistakes

The most common mistake is using too much. The lash line only needs a very small amount of solution. If liquid is running onto the eyelid skin or into the eye, too much has been applied.

Stopping and starting. The best results come with consistent application. The first couple of weeks are the most difficult, but when you start to see the results you will be hooked!

Finally, some people stop too early. Lashes grow slowly, so early results can be subtle. Full results usually take several months.

Should I Use Latisse Once or Twice a Day?

You only need to apply Latisse once a day.

Twice daily use is not recommended. It does not give double the result but it may cause irritation. That can mean more redness, dryness or unwanted hair growth around the treated area.

With bimatoprost, more is not better. Better is consistent, accurate and hygienic.

Morning or Evening: Which Is Best?

Evening application is usually best. This is how Latisse is normally directed to be used and it also fits conveniently into most night time routines.

Applying it at night has practical advantages. Makeup has usually been removed, the eyelid margin is clean, and there is less chance of the product being disturbed by mascara, eyeliner or cleansing. It also means that you have removed your contact lenses.

Apply the treatment first to clean skin and allow it to dry before applying anything else. It is water based and quick drying, and it is not known to interfere with any other eye creams or moisturisers.

What Happens If I Miss a Dose?

If you miss an evening application, do not double the next dose or apply extra. Simply restart the following evening using the normal amount.

Occasional missed doses are unlikely to ruin progress, but frequent inconsistency will slow results. The best results come from steady, once daily use.

What Happens If I Stop Using It?

If you stop using bimatoprost the treated lashes gradually return to their natural baseline. This usually happens over several months as the normal eyelash growth cycle resumes.

Some believe that the follicle is permanently enlarged when using the treatment, leaving a larger hair, but there is no independent evidence proving this.

There is no rebound effect or shedding. The follicles are simply no longer being encouraged to remain in the growth phase for longer than usual, so their original size returns.

Who Should Be Careful Before Using Latisse Lash Serum?

Bimatoprost is a prescription only medicine and is not suitable for everyone.

You should always disclose if you are pregnant, breastfeeding, have an eye condition, have had recent eyelid surgery, use glaucoma medication, or have previously reacted to any eye drops.

Bimatoprost was first used in ophthalmology for lowering intraocular pressure as a glaucoma treatment, and UK product information for bimatoprost eye drops includes cautions around eye irritation and contact lenses.

This is why MyLash uses a medical questionnaire reviewed by UK doctors before treatment is approved. If you have a complex medical history then we often arrange a short phone call to discuss the treatment and ask questions to make sure that it is right for you.

Why Buy Through MyLash?

There are many websites advertising “Latisse lash serum” or “bimatoprost eyelash serum”.

Some are cosmetic serums that are not effective.

Others are overseas suppliers where authenticity, concentration and storage conditions may be difficult to verify.

MyLash is different.

We are a UK doctor led service. Our treatment is prescribed after medical assessment and dispensed through UK pharmacy channels. We have been helping clients grow their lashes since 2007 and have been featured in UK magazines and newspapers. We have expertise with long-term experience and knowledge of the safety and efficacy of bimatoprost.

For a treatment applied close to the eye, that level of medical supervision matters.

The Key Takeaway

For best results with Latisse lash serum, the correct approach is simple:

Use a small amount, once daily, on the upper lash line, with a clean disposable applicator, and keep going consistently for at least 16 weeks.

The result comes from biology, not excess. Accurate application and medical supervision are what make treatment safer, more effective and more predictable.

Written by Dr Tom Walker, founder of MyLash and Opti Laboratories. MyLash was established in 2007 and was the first company in Europe to offer doctor led bimatoprost eyelash growth treatment.

Founded in 2007, MyLash was the first UK services to make Latisse 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 Latisse 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

• Latisse Before and After: What Results Can You Expect?
• Latisse: Once a day or twice a day?
• Bimatoprost for eyelash growth
• Mylash Reviews
• Latisse Lash Serum: How Does It Compare to Other Lash Serums?