Microfiber Brush 100pc. Microfiber Brush 100pc. These disposable micro brushes are ideal for applications of sealants, bonding agents, cavity liners, for beauty salons and Therapists. Commonly used with eyelash applications. Non-absorbent, non-linting fibers suspend solutions as small as 1/8 of a drop without spilling, dripping and waste. Bendable neck "stays put" to facilitate the placement of material into difficult areas.