Use a cotton swap to apply any cleaning solution to avoid over saturating the fabric. (thespruce.com)
Just apply with a cotton swap at the end of the day after cleansing. (villagejuicery.com)
I literally just use maybe 1/2 Tablespoon on a cotton ball for all my makeup but if you did your whole face you would likely need a bit more and perhaps want to use two cotton balls or a cotton swap square. (creatingbettertomorrow.com)