Frequently asked question- “are patch tests required?”
Cyanoacrylate is the main ingredient in lash adhesive (glue) and also the reason for most reactions. It is an irritant for your skin, eyeballs and respiratory functions. If you are using an EU regulated adhesive, it will state this fact, alongside a big diamond with an exclamation mark inside it, on the bottle or the packaging. For this reason, lash adhesives should NEVER touch the skin, ever. Testing on the skin is an old school method for patch testing and is not a clear indicator for showing if a reaction will occur or not. That being said applying a few lashes also DOES NOT give a clear indication or whether or not a reaction will occur. This is because of 2 reasons:
1. A patch test does not give full exposure in the same way a full set will
2. Lash adhesive allergies are cumulative and build up over time.
It is more likely for allergies, sensitivities and reactions to occur in clients that have been having lashes for 6 months or more, than in first timers!
A patch test would not accurately test for allergies, and a reaction could still occur even if the patch tests are fine.
If you have sensitive skin, or have reacted before, it will mean unfortunately you won’t be able to have your lash extensions done, due to the reaction of the cyanoacrylate. “Sensitive glue” also will not have any different effect as it still contains cyanoacrylate just with a lower percentage.
Cyanoacrylate allergy
If someone is allergic to Cyanoacrylate, unfortunately, they won’t be able to have lash extensions done. That said, most reactions / sensitisations are due to the vapours / odours coming off the Cyanoacrylate adhesive. The moisture in the eye naturally attracts the vapours and can cause sensitisation. This is why it is very important to have air movement at the point of application, moving the vapours away from the client. Otherwise, vapours will fall back onto the face if not moved away. They will fall particularly to the eye area due to the moisture.
Also – less is more. Use the smallest amount of adhesive to create a bond. Any excess adhesive can cause sensitisation if it is not cured. As soon as the client opens their eyes if there is too much adhesive on the lash the vapours will be attracted to the moisture in the eyes and they can become sensitive. Always keep good air movement / ventilation around the client and lash technician. Always ensure the client sits up before opening their eyes. Always ensure the least amount of adhesive is used. Excess adhesive can cause sensitisation. Select the correct adhesive.