I put a shot glass upside down on the top of the bottle and I squirt about a teaspoon in the glass each morning to clean my eye makeup brushes and then wipe off on a paper towel. Works great and a little goes a long way!
Found this to be the best brush cleanser; works well without being hard on brushes or too oily. Love that Nordstrom price matched as I saved money on this purchase, as well.
I think this brush cleanser is the best! It leaves no residue behind and deep cleans my brushes. A little goes a long way so this bottle will last you, I use a few drops and work it in batches.