The number of drops of toner you should use varies depending on the product and your personal preference, but a general guideline is 3-4 drops. This is typically enough to cover your entire face without being overly heavy.
For example, Glow Oasis recommends pouring 3-4 drops of toner into your palm and then patting it all over clean, dry skin. Similarly, in the Reddit thread "[PSA] Changing the way I applied my toner significantly improved ...", the author mentions using a few drops of toner and patting it into their face.
It is important to note that some toners, especially those with thicker consistencies, may require more than 3-4 drops to cover your face. Ultimately, the best way to determine how many drops to use is to experiment and see what works best for your skin.
