My homemade brush cleaner recipe works for any cleaning schedule since it makes enough solution for soaking sessions (my preferred method of cleaning) or daily spraying. Whichever method you choose, go with something that’s doable for you.
In a bottle or mason jar, combine all the ingredients in the order listed (the recipe). Shake the bottle. This solution may be used multiple times to clean brushes. Store the mixture in the fridge.
Combine as much of the mixture needed in a bowl. Add your makeup brushes to the mixture. I like to swish the brushes back in forth in the mixture and then let them soak for a few minutes. The mixture will go from clear to a dirty makeup mixture quickly. After a few minutes, remove the brushes, dump the solution, and rinse the brushes under the water.
Let the brushes rest on a towel to dry. Repeat weekly or twice a month to keep your brushes clean.
If you'd prefer to make just enough for a one-time solution, here's what I recommend:
1/8 cup witch hazel
1/2 tsp baby mild castile soap
1/4 cup distilled water
(optional) 1/4 tsp carrier oil, like grapeseed or olive oil