When it comes to patch testing it's vital that it's done in the correct way.
However, there is still a lot of outdated information and knowledge on how to do a patch test that was a case of applying the lash glue directly onto the client's arm, this is not how to do a patch test.
So this dates back to when lash extensions were first introduced and were tested the same way you was when testing for lash lift or hair dye products. The problem is these two do come in contact with the skin whereas lash glue should never every touch the skin. Lash glue itself is exothermic, which means it can effectively burn or make the skin warm which could lead to a false positive for your patch test.
The more up-to-date method is simply to apply 5 to 10 lash extensions per eye. Which makes sense because you're using the glue in the form that it's supposed to be.
The downside doing it this way however is because you're using such a small amount you can get a false negative and the client could still end up with an allergic reaction.
With our glues you do need to do a patch test 24 to 48 hours before the client’s appointment. We suggest booking it in with the consultation where you can go through lash styles, what they're after, so when it comes to the main appointment you're already set up and ready to go. And you also will have ensured that you've got the lashes in stock!
All clients need to be offered a patch test it is not down to them to ask for one. If a client did have a reaction and was not offered a patch test and decided to seek legal action you would be the one that would be at fault for not offering. A waiver would not stand up in court so there is no point even offering one.
At the end of the day, you're exercising due diligence under the Health and Safety Act. As you are allowing the client to make a health and safety decision when it's yours to make the health and safety legislation is quite clear on our obligation to manage risk.
So remember patch tests should never touch the skin apply 5 to 10 lashes per eye and you are good to go!