Lacrimals usually take the regular face/head textures and need to be treated the same way.  Reducing roughness or increasing specular will give the desired wet appearance.  The Glossy node works well also, but, again, it needs to be applied to the texture.  Of course, this depends on the type of shader arrangements you're implementing in the Material Room.  I tend to work heavily with the PrincipledBsdf node for Superfly renders, especially where the skin textures are used.  The GlassBsdf node has become standard for me in cornea and sclera/eye white surface application, while teeth are a straight Cycles arrangement.