wash it immediately [SEP] i used this for henna it worked very well it was easier to use though i suggest building up a muscle or two in your hand if you want to use it over a half an hour it can cramp your hand i really like the large array of different tips i have used about of them so far and each of them work very wellthe only bad part is that when i tried washing them out after every use cause henna can rot they were difficult to clean the wider fully plastic tips were easier but some of the tips had to be soaked to get everything out of them and the lids were difficult to fully clean as welloverall good product fulfilled its use but a tad challenging to clean