Hello Nice Day,
We tell people to let them dry 24 hours. However this does vary depending on the size of the drop. If you are putting a drop the size of a pencil eraser I would suggest a couple of days. My suggestion is that you take and do a line of drops that are different sizes and test out the drying times for each size drop. I would do 3 or 4 drops of the same size so that you can test them at drying different times. Once you have determined the drying times of each size drop, then make yourself a chart with each size drop and write the drying time under each drop.
By: Tonic Studios