i would like to create a shader with animated texture favourable with triplanar mapping or something that would work similar to create the effect of paint flowing on a character.
Right now I am using the Panner node but its not really satisfiying because the UV seams mess up the look.
Hello! In order to achieve that sort of effect with triplanar you'll have to create a custom solution based on our TriplanarProjection sample, as the Triplanar node facilitates the use of this technique but, as stated on the wiki page, its merely a convenience node for a general purpose triplanar effect, so it does not support panning.
You could also try to use a secondary UV channel or drive the effect in object or world space, as you can see in the Extrusion example, or consider using a Flowmap - Flowmap example, or even use our AnimatedUVDistortion and RadialUVDistortion as a base for caustics, but it will always depend on how you want to implement it.