Why Do Lash Extensions Need Infills?
- thelashcook
- 2 days ago
- 3 min read
One of the most common questions lash artists hear is:
"Why do I need infills when my lash extensions haven't all fallen out?"
The answer is simple: lash extensions are attached to your natural lashes, and your natural lashes are constantly shedding as part of a normal growth cycle.
Let's take a closer look at why infills are essential for keeping your lash extensions looking full and fresh.
Understanding the Lash Growth Cycle
Just like the hair on your head, your natural eyelashes go through a continuous growth cycle.
Every natural lash is in one of three stages:
Anagen (Growth Phase)
A new lash is actively growing.
Catagen (Transition Phase)
The lash stops growing and prepares to shed.
Telogen (Resting Phase)
The lash eventually sheds and a new lash begins to grow.
This process happens every day, which means losing a few lashes daily is completely normal.
Because lash extensions are attached to the natural lash, when the natural lash sheds, the extension sheds too.
Why Lash Extensions Don't Last Forever
Many clients assume lash extensions should stay looking exactly the same until their next appointment.
In reality, natural shedding means that lash sets gradually become less full over time.
Most clients naturally lose around 2-5 lashes per eye per day.
Over two or three weeks, this can make a significant difference to the appearance of a lash set.
This is why regular infills are recommended.
What Happens During An Infill?
An infill appointment allows your lash artist to:
Remove outgrown extensions
Replace shed extensions
Fill gaps within the lash line
Maintain the shape and styling of the original set
The goal is to restore your lashes to their original fullness without needing a completely new set.
How Often Should You Get Infills?
For most clients, infills are recommended every:
✨ 2 weeks for maximum fullness
✨ 2-3 weeks for most lash wearers
✨ 3 weeks maximum before a full set may be required
Leaving lashes longer than this often means there aren't enough extensions remaining to qualify as an infill.
What Can Affect Retention?
While natural shedding is unavoidable, several factors can affect how well your lash extensions last.
These include:
Natural oil production
Rubbing your eyes
Sleeping position
Makeup and skincare products
Swimming and holidays
Hormonal changes
Illness or medication
Even with perfect aftercare, some shedding is always expected because your natural lashes are constantly renewing themselves.
Why Good Products Matter
Quality products can make a huge difference when it comes to retention.
At The Lash Cook, our products are designed by a lash tech, for lash techs, with retention and ease of use in mind.
Our bestselling products include:
Sticky Toffee Lash Glue performs across a wide humidity range of 35-85% and is designed to help lash artists achieve strong, reliable bonds throughout the year.
Tips To Make Your Lash Extensions Last Longer
To get the most from your lash extensions:
Clean your lashes daily
Avoid rubbing or pulling them
Brush them regularly
Keep oil-based products away from the lash line
Attend infill appointments on time
Following these simple steps can help maintain fuller lashes between appointments.
The Bottom Line
Needing infills doesn't mean your lash extensions are failing.
In fact, it means your natural lashes are doing exactly what they're supposed to do.
Because your natural lashes are constantly shedding and renewing, regular infills are essential for maintaining beautiful, full lash sets.
With the right aftercare, regular appointments and quality products, you can enjoy gorgeous lashes all year round.
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