I had a client this evening having an eyelash tint. The tint just wouldn't take. I reapplied 4 times...yes you read that right, and it still only minimal coverage. I use refectocil and usually get great results. Why would this happen? I'm completely stumped. I left each tint on for 15 minutes, so a total time of an hour and it still didn't look right. She was a brunette and I used blue black. Can anyone shed any light?