Composite Wetting Resin:

Composite Wetting Resin substantially facilitates and improves composite contouring: it makes composites more adaptive, enhances glide on instruments, and facilitates composite layer bonding.

It is a 45% filled, light cured, liquid resin that is free of solvents, which avoids negative effects on physical composite properties.

In the dental office, liquid bonding agents are often used for modifying and wetting composites. These are, however, poorly suited for this purpose.
Many of them contain solvents or even etchants and have a low filler content that will lead to composite weakening.