Professional eyelash extensions are far more than simply attaching synthetic lashes. For results that are long-lasting, harmonious, and safe, lash stylists must thoroughly understand the natural growth phases of eyelashes. Each lash grows, sheds, and is replaced at its own pace. This biological cycle directly impacts durability, correction, and refill appointments. At MONLIS School in Munich, this knowledge forms one of the fundamental pillars of training.
The Three Main Phases of Lash Growth
1. Anagen Phase (Growth Phase)
During this active growth stage, the lash develops inside the follicle and grows steadily. Only about 30–40% of lashes are in this phase at the same time. Extensions applied here may have reduced retention, as the lashes are still short and not yet stable.
2. Catagen Phase (Transition Phase)
In this phase, the lash has reached its final length and growth stops. The follicle begins to shrink back. This is the optimal phase for extensions, as natural lashes are strong enough to support artificial ones.
3. Telogen Phase (Resting Phase)
This is the final stage of the lash cycle. After several weeks, the lash naturally sheds while a new lash in the anagen phase is already developing. Extensions placed on telogen lashes will shed sooner — a normal, natural process.
Why Growth Phases Matter for Correction and Refills
Since each lash follows its own cycle, all three phases are always present at the same time on one eye. This explains why lash sets appear uneven after a few weeks:
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Some extensions fall out as natural lashes in the telogen phase shed.
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New lashes have grown in but don’t yet carry extensions.
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Extensions remain firmly bonded to lashes in the catagen phase.
For this reason, professionals recommend regular refill sessions every 3–4 weeks to maintain a balanced, full look.
Common Mistakes When Ignoring Growth Phases
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Too long between refill appointments → visible gaps and uneven results.
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Incorrect lash length selection → strain on natural lashes in the growth phase.
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Applying extensions to weak lashes → poor retention and premature shedding.
At MONLIS School Munich, students are taught to avoid these errors and work with biological cycles instead of against them.
Practical Training at MONLIS School
The curriculum combines theory with extensive hands-on practice:
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Analyzing growth cycles on different clients.
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Selecting lash lengths and thicknesses based on the growth stage.
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Applying techniques to maximize retention and comfort.
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Planning refill schedules for real salon operations.
This ensures that graduates are fully equipped to deliver both beautiful and healthy lash extension results.
Lash growth phases are a decisive factor in the longevity, correction, and refill process of extensions. Only by understanding these cycles can stylists create results that are both aesthetic and sustainable. At MONLIS School Munich, students gain this essential knowledge and become true experts in modern lash extension techniques.
