I've used this product for years to salvage paint brushes of all types and it works just as well on natural bristle brushes as it does with synthetics. Likewise, it works just as well with oil-based paints or latex. Just leave any brush soaking in it for a little while and it will soften the paint, making it possible to clean out while the product itself cleans out of the brush with soap and water. This product not only cleans bristles, but conditions them as well. While not the most environmentally safe, it is excellent at what it does; just make sure to use in a well-ventilated area.
Sunnyside's brush cleaner is just about as good as Klean-Strip's, but doesn't smell as bad. Like the Klean-Strip product, it will soften both oil-based and latex paints, whether fresh or hardened. The fast-acting formula can be cleaned out of the brushes with water. Restores brushes to like-new condition. Brushes can be immediately returned to use, without having to wait for them to dry.
Like the Sunnyside product, this brush cleaner contains no benzols or acids, making it a more environmentally friendly option than the Kleen-Strip product. It works very well with wet oil-based products as well, although it shouldn’t be used with wet water-based products. Kwikeeze brush cleaner is designed for cleaning out hardened paint of all types including brushes, rollers and can even remove varnish and lacquer. It contains no caustic substances, benzols or acids, making it more environmentally friendly than the Kleen-Strip product. This product is a great brush cleaner for use with wet oil-based paints as well, although you should not use it for wet latex paints. The paint solids will settle, allowing you to pour off the clear liquid to be reused.
This is a fully biodegradable product, specifically formulated for use on synthetic brushes and roller covers. It’s not intended for use with natural bristle brushes but it does work with both oil-based and latex paints, as well as clear wood finishes. The brush needs to be given time to soak in the liquid, agitating it periodically. While slower to use than the other ones we've looked at, it does have the distinct advantage of being environmentally friendly.
This cleaner falls between the Kleen-Strip and the Krud Kutter on the environmental friendliness scale. While it’s not biodegradable, it contains no benzene or d-limonene, and has a very low odor. This product is formulated more for use with residue from oil-based products, not water based ones. However, you can still use it as a brush cleaner for fresh water based paints as well. It is great for removing paint from other surfaces, such as cement and tile floors.