I accidentally hardened one of my fine tip brushes, and this product immediately melted off the material and restored its original shape. I was a little skeptical of purchasing this bc of the mixed reviews, but I don't regret it at all. It's also conveniently in a pumping bottle, so there are no issues with cross contamination. It's also super easy to control the amount used. It's a smooth jelly material that's not too sticky or difficult to use, and it leaves behind a smooth and clean coat to protect the shape of the brush. Someone mentioned it reminds them of the texture of hand sanitizer, which I would say is spot on, minus the drying properties of cleaning brushes with alcohol!