Guides for lash, brow and threading studios
How to set a lash fill policy clients actually follow
Updated: November 15, 2026
Fill windows, how many lashes must be left, how long fills and full sets take, and how to write it so clients book the right service.
What most studios use
- A fill within 2 to 3 weeks of the last full set or fill.
- At least 40 to 50 percent of the extensions still on. Fewer is charged as a new full set.
- A fill from another artist’s work is often booked as a full set, or as a “foreign fill” at a higher price.
Times to book
- Classic full set: about 1.5 to 2.5 hours.
- Fill: about 1 to 1.5 hours.
- Removal: about 20 to 30 minutes.
Use your own times; these are typical, and book long if you are newer.
Write it where clients book
Most fill trouble comes from clients picking “fill” when they need a full set. Put the rule where clients choose: in the service name, like “2-week fill”, and on your price list and booking policy in one short line: “within 14 days, at least half your lashes left.” Give each fill length its own service with its own price and time.
With FaceInLine each request waits for you, so if a regular asks for a fill five weeks out, you can move it to a full-set time before you confirm.
Questions
Should I charge more for a fill after 3 weeks?
Many studios do, with a 3- or 4-week fill priced between a 2-week fill and a full set. Keep the tiers few so clients can choose.