Eyelash extensions are one of today’s most popular beauty treatments. They allow your gaze to remain expressive, full, and well-groomed – without the need for daily mascara. However, to maintain the beautiful effect, regular eyelash refills are essential. But exactly when should you get a new set, and why isn’t it enough to simply “wait until they fall out”? Let’s go through it from a professional perspective.
Eyelash Anatomy and Growth Cycle
To understand why refills are necessary from time to time, it’s important to know the natural eyelash growth cycle.
Structure of the Eyelash
An eyelash is a keratin-filled hair growing along the eyelid margin. The root is located in the follicle, which receives nutrients through blood circulation.
Growth Phases
The natural eyelash growth cycle consists of three main stages:
- Anagen phase (growth stage) – the lash actively grows for about 4–6 weeks.
- Catagen phase (transition stage) – growth stops, and the lash prepares for the resting phase.
- Telogen phase (resting and shedding) – the lash detaches from the root and falls out, replaced by a new anagen lash.
Since these cycles occur continuously, 2–5 natural lashes may fall out daily – naturally taking the extensions with them.
What is an Eyelash Refill?
During a refill, the stylist replaces the lash extensions that have fallen out due to the natural lash cycle or external factors. This ensures the lash line remains consistently full and even, avoiding gaps or an untidy appearance.
Perfectly full lash extension set close-up
When Should You Get a Refill? – Average Time Intervals
Refill frequency depends on several factors, but professional recommendations are:
- Every 2–3 weeks – optimal refresh interval for most clients.
- Every 4 weeks – in rare cases, if natural shedding is slower and lifestyle is lash-friendly.
Why not wait longer?
If too many lashes are missing, the stylist will essentially need to create a full set again, which takes more time, product, and cost.
Factors Affecting Refill Frequency
Lifestyle
- Exercise and sweating – high humidity can weaken adhesive bonds.
- Saunas and steam rooms – heat and steam accelerate adhesive breakdown.
- Makeup and cleansing – oil-based removers can dissolve lash glue.
Sleeping Habits
Sleeping on your side or stomach can cause friction with the pillow, leading to faster lash loss.
Aftercare
Regular cleaning and using oil-free products significantly extend the lifespan of your set.
Client brushing her lashes at home with a lash wand
Signs It’s Time for a Refill
- Gaps have appeared along the lash line.
- Lashes are pointing in different directions or look messy.
- Volume and shape no longer match the original style.
- The set no longer gives that “fresh” look you love.
When to Get a Full New Set
- More than 50% of lash extensions are missing.
- You’ve gone more than 5 weeks without a refill.
- You want to change styles (e.g., from classic to volume or hybrid).
Pro Tips for Longer Lasting Lashes
- Use oil-free products around the eyes.
- Avoid rubbing your eyes or pressing them against your pillow.
- Use a lash brush for daily cleaning.
- Book your refill before half of the set is gone.
Comparison of partially worn vs. freshly refilled lash line
Frequently Asked Questions (FAQ)
Does an eyelash refill hurt?
No, when done properly, it’s completely painless.
Does it thin my natural lashes?
No, if applied by a trained stylist and maintained properly.
Can I work out with lash extensions?
Yes, but pay attention to cleaning and moisture exposure.
