Eyelash Extensions: What to Expect and How to Look After Them
What happens at a lash extension appointment, how long they last, daily care, what to avoid and when to seek advice. A UK guide to lash aftercare.
Lash extensions can make mornings simpler, but they are a commitment to a bit of care and regular upkeep. Knowing what the appointment involves and how to look after them helps them last and keeps your natural lashes comfortable.
Before the appointment
Patch test and consultation
A reputable technician will ask about allergies, eye conditions and previous reactions, and may recommend a patch test for the adhesive. Do not skip this. Our guide on skin sensitivity and allergies before beauty treatments explains why.
What to do on the day
- Arrive with clean, makeup-free lashes and eyelids
- Avoid mascara, oil-based products and eye cream around the eye area
- Remove contact lenses if you wear them and bring your glasses
- Let the technician know if you have a cold, eye infection or irritation, as treatment may need to be postponed
What happens during the appointment
- Consultation. You agree on length, curl and style, such as natural or fuller.
- Preparation. Your eyes are closed, lower lashes are covered with tape or pads and lashes are cleaned.
- Application. Each extension is applied to an individual natural lash using adhesive.
- Finish. The technician checks symmetry, brushes through and gives aftercare advice.
You will lie down with your eyes closed for one to three hours, depending on the set. It is often relaxing, and some people fall asleep. If anything stings or feels uncomfortable, tell the technician straight away.
Aftercare: the first 24 to 48 hours
Technicians typically ask you to keep lashes dry for a period, often 24 to 48 hours, while the adhesive fully sets. Avoid:
- Water, steam, saunas and heavy sweating
- Rubbing or touching the lashes
- Swimming or showers with the face directly in water
Follow the specific instructions your technician gives you.
Daily care
- Brush gently with a clean spoolie each day, starting from the middle and going outwards.
- Cleanse the lash line with a gentle, oil-free lash cleanser, as advised by your technician.
- Avoid oil-based products near the eyes, which can weaken the adhesive.
- Skip waterproof mascara and use only products designed for extensions, if at all.
- Do not use an eyelash curler. It can break the extensions or damage your natural lashes.
- Sleep carefully. Sleeping on your back or side with a clean pillow helps.
How long they last
Extensions are shed along with your natural lashes, which go through a growth cycle. Most people book infills every two to four weeks, with a full set being redone every couple of months or so. Timing varies for everyone.
Do not pick or pull them
Pulling at extensions can take the natural lash with it, leading to gaps. If you want to take them off, book a professional removal. Our article on lash lift vs lash extensions can help you decide whether extensions suit you at all.
When to seek advice
Contact your technician and, if needed, a pharmacist or GP if you experience:
- Persistent redness, swelling or itching
- Sore, watering or painful eyes
- Crusting or discharge
For anything severe, such as sudden swelling or difficulty breathing, seek urgent medical help.
Cost and upkeep
Lash extensions are a recurring cost, so plan for infills and removal as well as the first set. See mobile lash and brow treatment prices.
Booking via Compito
You can search by postcode, compare ID-verified lash technicians and send a request describing the look you want. Messaging lets you arrange a patch test and ask about aftercare, and you can pay online once you accept an offer. See how it works.
A realistic first month
Week one is the settling period. Lashes look their fullest and you will be learning not to rub your eyes. Some people notice a few lashes shed in the first days, which is usually the extensions attached to weak or very fine natural lashes. By weeks two and three, natural shedding means the set looks thinner, and gaps can appear. By week three or four, most people need a refill appointment, or the set can look sparse and uneven.
Common mistakes
- Wetting lashes too soon. Follow your technician's advice on how long to keep them dry after the appointment.
- Using the wrong products. Oil-based cleansers and some mascaras can weaken the bond, so ask what is safe to use.
- Sleeping face-down in the pillow every night. Try sleeping on your back where you can.
- Using a regular eyelash curler, which can bend and break extensions.
- Putting off refills until lashes look very sparse, which often means a full new set is needed instead.
Cleaning, in practice
Many technicians recommend cleaning lashes gently with a suitable foaming cleanser and a soft brush, then patting dry and brushing through. A clean lash line is more comfortable and tends to hold extensions better. Ask your technician to show you how, since technique matters.
Extra care for sensitive eyes
Tell the technician about hay fever, contact lens use, dry eyes or previous reactions to adhesives. If you ever have redness, swelling, pain or blurred vision, stop and contact your GP, pharmacist or an optician promptly rather than waiting.
Deciding whether to continue
If your natural lashes look thin or damaged, taking a break and asking for honest advice is sensible. See lash lift vs lash extensions if you would like a lower-maintenance alternative.
Frequently asked questions
Can I wear mascara with lash extensions?
Many technicians advise against it because it can clog and weaken the adhesive, and removing it can pull on the lashes. If you do use it, choose a product recommended for extensions and ask your technician.
Do lash extensions damage natural lashes?
When properly applied and cared for, they should not cause permanent damage, but poor application, over-heavy extensions or pulling can harm natural lashes. Choose an experienced technician and follow the aftercare.
Can I get them wet?
After the initial period, yes, in moderation. Follow your technician's guidance about cleansing and drying them gently.