If you've ever had a client tell you that one eye always loses lashes faster than the other, you're not alone! Uneven retention is one of the most common issues lash artists face, and it usually has a very specific cause. When this happens, the most important question to ask is simple. What is different on that side?
Even small differences in your room setup, adhesive timing, or application can lead to one eye holding beautifully while the other struggles. Here are the most common reasons this happens and how to fix them.
Environmental differences
Sometimes one side of your client’s face is closer to a window, humidifier, fan, or heater. That small difference can change how your adhesive cures.
Heat and humidity speed up cure time. If the adhesive is curing too fast on one side, it can begin to dry before the extension properly bonds to the natural lash, leading to poor retention.
What to do:
Adjust your room setup so both sides of the client are exposed to the same temperature and humidity. The goal is a balanced environment for both eyes.
Adhesive curing time and distance
Most lash artists place their adhesive and lash tile on one side of the client. This means one eye is always closer to the glue than the other.
For faster curing adhesives or newer artists who move a little slower, this matters. By the time the lash reaches the eye that is farther away, the adhesive may already be partially cured, which prevents a strong bond.
What to do:
- Use an adhesive with a slightly slower dry time so you have more control.
- Turn or tilt the client’s head so both eyes are closer to the adhesive.
- Pick up a bit more adhesive to compensate for travel time.
Application challenges
Almost every artist has one side that feels harder to lash. If you struggle more with isolation, placement, or angle on one eye, that is usually the eye with weaker retention.
When a lash doesn't attach cleanly on the first attempt, or has to be adjusted multiple times, the bond is never as strong.
What to do:
- Use tape to lift, stretch, or support the lid so you can see and isolate better.
- Adjust the client’s head position to improve your angle and visibility.
- Slow down and focus on getting each attachment clean on the first try.
Client habits and natural lashes
Sometimes the issue is not your work at all. Clients who sleep on one side of their face, rub their eyes, or have certain medications or lash growth patterns can experience more shedding on one eye.
What to do:
- Educate clients on proper aftercare.
- Encourage them to avoid sleeping on their face or one side.
- Recommend silk or satin pillowcases to reduce friction.
Uneven retention isn't random. When you start paying attention to what changes from one side to the other, the pattern becomes clear and so does the solution 🤍
