Eyelash Extensions and Eye Health: Why Lash Hygiene Matters More Than You Think

Eyelash extensions are one of the most popular beauty services today. When applied correctly, they can make the eyes look more defined, reduce the need for daily makeup, and help maintain a polished look for several weeks.

However, a study presented at the 2026 Congress of the European Society of Cataract and Refractive Surgeons (ESCRS) in London has once again highlighted something professional lash artists should always remind their clients about:

Cleaning and caring for your lashes after an extension treatment is not optional.

What did the study find among regular eyelash extension users?

The study looked at young women who used eyelash extensions and examined factors related to eyelid and ocular surface health.

Among a small group of regular eyelash extension users, researchers found a high prevalence of Demodex folliculorum, a microscopic organism that can naturally live around hair follicles, including the eyelashes.

The study also reported signs related to meibomian gland dysfunction, as well as symptoms such as:

• eye redness;
• itching or discomfort around the eyes;
• watery eyes;
• irritation after wearing eyelash extensions.

It is important to understand that this study does not prove that eyelash extensions directly cause Demodex or eye disease.

Demodex can naturally be present on the skin of many people. However, when the lash line is not cleaned properly, natural oils, dead skin cells, dust, and makeup residue can build up around the roots of the lashes. This can make the eyelid area more difficult to keep clean and may contribute to irritation.

And this is exactly why lash hygiene matters.

Beautiful extensions do not mean you should avoid washing your lashes

One of the most common misconceptions we still hear is:

“You should not wash your lashes after extensions because water will make them fall out faster.”

In reality, with modern lash products and application techniques, keeping the lash area clean is an important part of proper aftercare.

If your lashes are not cleaned regularly, natural skin oils, dust, sunscreen, eyeshadow, eyeliner, and skincare products can gradually accumulate around the lash line.

This is not only an aesthetic issue.

An unclean lash line may contribute to itching, discomfort, or irritation around the eyes. At the same time, oil and product buildup may also affect the retention of the extensions.

In other words:

Keeping your lashes clean can help protect the eye area while also helping your extensions stay looking fresh and beautiful.

Lash care should begin from day one

A beautiful lash set does not depend only on the skill of the lash artist.

Long-term results also depend greatly on how clients care for their lashes at home.

After getting eyelash extensions, it is helpful to build a few simple habits:

• clean the lash area regularly with a product suitable for eyelash extensions. Take a look at Lash & Brow Foam Cleanser Hang’s Studio
• gently cleanse close to the lash line, not only the tips of the extensions;
• avoid allowing eye makeup residue to build up for several days;
• avoid rubbing or pulling the lashes;
• gently brush the lashes once they are dry;
• pay attention to unusual symptoms such as persistent redness, swelling, pain, or significant itching.

If unusual symptoms continue, it is advisable to stop using cosmetic products around the eyes and seek advice from an appropriate healthcare professional.

Lash hygiene should be part of a professional eyelash extension service

This research does not mean that clients should be afraid of eyelash extensions or avoid the service.

Instead, it highlights a very practical point:

A professional eyelash extension service does not end when the lash artist finishes applying the extensions.

A good service should also include clear aftercare instructions so that clients know how to keep the eye area and lash line clean during the following weeks.

At Hang Studio, we consider aftercare an important part of the eyelash extension experience. When clients understand how to clean and care for their lashes correctly, they are not only more likely to keep their extensions looking good but can also take better care of their eye area.

Proper preparation before your appointment matters too

Cleaning and caring for your lashes after the service is important, but a good lash appointment actually begins before you lie down on the lash bed.

If this is your first time getting eyelash extensions, there are a few small things worth knowing beforehand: whether you should wear makeup, whether you should drink coffee before the appointment, what information you should share with your lash artist, and how to prepare your eye area.

We have put together these tips in our article:

What Should You Do Before Your First Lash Extension Appointment? Things I Wish Every Client Knew

If you are preparing for your first eyelash extension appointment, this is a useful article to read in advance.

Conclusion

Research into eyelash extensions and eye health is still developing, and one individual study should not be used to claim that eyelash extensions directly cause a specific health problem.

However, the research presented at ESCRS 2026 reinforces a very simple principle that both lash artists and clients should remember:

Eyelash extensions need to be cleaned.

Having extensions should not mean avoiding water, avoiding cleansing, or leaving the lash line unwashed for several weeks.

Good application techniques from the lash artist and proper aftercare from the client should always go hand in hand.

Because the goal of a professional eyelash extension service is not only to create beautiful lashes on the first day.

It is also to help clients maintain them in a clean, comfortable, and responsible way throughout the time they wear them.