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This review focused on the effects of the presence of liquid on tribological performances of graphite and hexagonal boron nitride (hBN) particles at ambient atmosphere. Two tribological test conditions have been evaluated with AISI 52100 steel materials. In dry conditions for lubrication tests with pure particles and liquid conditions when a drop of liquid is added before or during the friction test. Graphite and hBN have two different tribological performances in dry conditions while whatever was the type of liquid in liquid conditions they are similar; and while. Raman, SEM and TEM investigations bring out weak influence of sliding mechanical constraints for tribofilms built in the presence of liquid. Different hypotheses have been investigated; tribo-intercalation, influence of adsorption, lubrication by hydrogen and action of the liquid. Simultaneous presence of liquid and particles induces friction mechanism occurs inside of the tribofilm reducing friction due to its nanostructuration.