Your clients should never try to remove extensions themselves. To remove extensions in the less harmless (for natural lashes) way possible a special liquid called remover is used. It splinters cyanoacrylate's molecules and allows to remove extensions with a couple of simple motions. There are two types of remover: gel and cream.

Gel remover
Gel remover exposition time if 5-7 minutes. Apply it carefully, preferably with a micro brush. It suits experienced professionals better because there is a risk of it getting into the client's eyes, however small.

Cream remover
Cream remover exposition time if 15-20 minutes. It can be applied with either a micro brush or an applicator because it's completely non-invasive

Rules of working with remover:
1. Apply eyepatches first.
2. Remover is applied to the hitch zone.
3. After required amount of time passes, you have to carefully scrape extensions off with an applicator.
4. Lashes that couldn't be scraped off can be removed with tweezers. Carefully pinch a natural lash with one pair of tweezers, an artificial one with another and gently tug them in different directions.
5. After the removal process is done, you have to clean the remaining remover from the lashes with applicators or cotton pads.
6. Only after there are no traces of removal left can a client rinse their face with water.