Coalescence refers to the phenomenon where two bubbles approach each other within a critical distance, causing the thin liquid film between them to rupture and resulting in their merging . This process leads to an increase in the size of the bubbles and a simultaneous decrease in their number . It testifies to the fragility of films. The coalescence phenomenon can be constrained by mechanisms that stabilize the lamellae. For instance, the disjoining pressure might, in certain cases, contribute to the stability of thin films. Augmenting the viscoelasticity of the interfaces is another method to impede the thinning and rupture of the films ]. Nevertheless, it is important to note that a film cannot be stabilized indefinitely, primarily due to factors such as drainage, spontaneous fluctuations in thickness and density, or external disturbances Figure : Destabilization mechanisms in a foam ii.