Bosworth's new Acid Etch is silica and glycerin free. Acid Etch creates a deeper etch pattern for easier application of bonding materials. For increased patient comfort and easy cleanup, Acid Etch® is highly viscous, allowing for more accurate placement on enamel or dentin. Material will not slump, slide or run. Easily placed and controlled consistency. Acid Etch® is odorless and tasteless, and available in a 35% concentration. Now in transparent aqua blue.