Patch test - eyelash/brow tint

[nikki21]

Hi,
Does anyone know of a brand of tint in which they provide a sticker type patch test that you can send to client rather than having to go to client prior to treatment to carry out a patch test (similar to HD Brows as I know they have patch test you can send out which would be sooooo much easier)
If anyone knows of a product would be very grateful if you would let me know. [emoji2]

 

[Golden glam]

I'm also interested to know if there is, it would make life so much easier!

 

[IBUK]

Think its called colour start