This is the only one I will use. It works and you can make it last for at least a month and a half. Wash your brushes every week if you wear makeup everyday. Wash your brushes every 2 weeks if you wear makeup sometimes.
This is the best brush cleanser you will ever find. I have tried all the others on the market. I have also tried all the homemade concoctions I learned about from the internet using dish soap, cooking oil, etc. I ALWAYS come back to the MAC Brush Cleanser. This removes ALL traces of make up (even waterproof) and leaves your brushes like new. Thank you MAC! Thank you Nordstrom!