Grande Lash MD side effect?

Not sure what other sub would be appropriate for this, but I wanted to try out eyelash serums for the first time so I got grande lash. I put a swipe above my lash line and it immediately made my eyelid numb? Maybe I used too big a swipe. I looked it up and it seems to be a side effect from the growing agent. I’m just curious if other people have used this and felt similarly. If I begin to use it more it may go away if it is harmless (or so google tells me), but I’m also worried I might be reacting badly to it and that’s why it made my eyelid numb. I don’t want to go blind or anything. I washed it off immediately and it didn’t linger at all. Haven’t used it since and won’t unless people say it’s common/harmless.