Should I buy Mac Cosmetics brush cleaner?

Hi guys. I have several MAC makeup brushes and get very dirty, because I use them with frequency. Cleaning brush Mac is a good investment? and how long it will last? Thanks! Here is the cleaning brush through – http://www.maccosmetics.com/product/spp.tmpl?CATEGORY_ID=CAT135&PRODUCT_ID=307&QUERY=Cleanser

I had my bottle for 2 years and is always half .. I feel like baby shampoo to clean more .. Probably condition and not clean the brush, haha well

How to clean your dirty makeup brushes

Sponge Cleaner What it is: A superb cleaner that removes dirt, bacteria, and makeup residue easily from your sponge, brushes, and puff.What it does: This cleanser lets you spend less time cleaning and more time enjoying the results of perfect makeup applications. Sponges and makeup tools can become dirty, harboring unwanted bacteria that can irritate the skin. Most cleaners require a long rinsing time until the ...