Retention issues are rarely due to a single factor. Cleaning, environment, work speed, glue droplet, storage, and contact surface all need to work together.
Estimated reading time: 8 minutes · Updated July 25, 2026
Quick troubleshooting
| Problem | Possible cause | Check first |
|---|---|---|
| Lashes shed early | Cleaning, glue choice, or contact surface | Pre-treatment and placement |
| Glue feels slow | Low humidity or slow product | Measurements and product range |
| Glue becomes stringy | Old droplet or incorrect storage | Droplet replacement and bottle condition |
Eight common mistakes
Wrong drying time
The glue sets before or after correct placement.
Too much glue
Creates weight, clumps, and uneven curing.
Too little glue
Results in insufficient contact surface.
Insufficient cleaning
Sebum, makeup, and skincare impair the bond.
Incorrect work environment
Temperature and humidity affect polymerization.
Old glue droplet
Surface and consistency change during the treatment.
Incorrect storage
Heat, moisture, and air shorten shelf life.
Too small contact surface
Point contact provides weaker retention.
Bellestore Expert Tips
Document before you change
Note the glue, opening date, temperature, humidity, treatment time, and results. This allows you to spot patterns and avoid changing several factors at random.
Checklist when retention fails
- Check cleaning and complete drying.
- Measure temperature and humidity.
- Compare drying time with your actual work speed.
- Switch to a fresh glue droplet.
- Check the bottle's age and storage.
- Examine glue quantity and contact surface.
- Evaluate the client's aftercare.
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Frequently asked questions
Why doesn't the lash extension last?
Common causes are cleaning, wrong glue for the speed, unsuitable environment, or too small contact surface.
How do I know if the glue is old?
Consistency and drying time become less predictable. Follow the opening date and the product's shelf-life instructions.
How often should the glue droplet be changed?
When the surface or consistency changes, and according to the product's instructions for use.
