I use Dr. Bronners’ liquid soap — one part soap to two or three parts water (usually more soap for foundation brushes). I usually group brushes by brush head, and then for smaller brushes, I’ll get soap and water on the bristles, swirl in my hand, and gently reshape. I leave them to dry on a microfiber mat (like for dish drying). For larger brush heads, I’ll try to flip them over after a few hours.
We try to approve comments within 24 hours (and reply to them within 72 hours) but can sometimes get behind and appreciate your patience! 🙂 If you have general feedback, product review requests, off-topic questions, or need technical support, please contact us directly. Thank you for your patience!