Quick answer: The key is keeping water from pooling in the ferrule; flat drying with the bristles over an edge works well.

What to do
An upside-down drying rack can also work if it holds the brush securely without crushing bristles.
Practical tips
Avoid leaving wet brushes standing bristles-up in a cup.
- Start with the simplest method that fits your situation and check the result before moving on.
- Read instructions for your specific product, device or ingredients when they differ from general advice.
- Keep a note of the method that worked so you can repeat it the next time.
Common mistakes to avoid
Avoid soaking the handle, scrubbing delicate bristles aggressively, or storing tools while damp. Cleaning removes residue but does not always sterilize a brush.
Frequently asked questions
What’s the best first step? An upside-down drying rack can also work if it holds the brush securely without crushing bristles. What if it does not work? Review the conditions described above and adjust the method to your equipment or situation. Avoid leaving wet brushes standing bristles-up in a cup.

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