09 Aug 2026 · 4 min read · by the Lash Serum UK editorial team

Using a serum with extensions or a lash lift

Oil-free or nothing. What lash technicians told us about aftercare, adhesive breakdown and timing between appointments.

Lash technician applying eyelash extensions in a salon
In short: You can use a serum with extensions or a lift, but choose an oil-free, water-based formula, apply only to the lash line, and pause for 24–48 hours after each appointment.

Extensions and lifts are hard on natural lashes: the weight of a set, the adhesive, and the chemical solutions used in a lift can all leave lashes brittle. A serum can help — if you use the right one, the right way.

Why oil is the problem

Most extension adhesives are cyanoacrylate-based. Oils and some glycols soften the bond, so a heavy or oily serum can make a new set shed early. Look for “oil-free” or “water-based” on the pack and check the INCI list for castor oil, argan oil or other plant oils.

Timing around appointments

TreatmentPause before restarting serum
New set of extensions24–48 hours (until adhesive has fully cured)
Infill24 hours
Lash lift / tint48 hours
RemovalRestart the same evening if skin is calm

How to apply with extensions

  1. Clean the lash line with an oil-free extension cleanser and let it dry.
  2. Use a single thin stroke at the very base of the natural lashes, avoiding the bond point.
  3. Do not brush the serum through the extensions.
  4. Let it dry for two minutes before sleeping; sleep on your back if you can.

What technicians told us

The lash technicians we spoke to agreed on three points: tell your technician you use a serum, so they can check your natural lashes at each infill; take a break from extensions for a full growth cycle once or twice a year; and never pick or pull at shedding extensions, which takes the natural lash with it.

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