paint storage - flow aid & thinner

[tom q vaxy]

Q: any long term effects of adding flow aid & thinner to a bottle of paint vs using it at the time of painting?



several sources of decanting odd shaped bottles into a consistent 17ml dropper bottle suggest using the above additives in order to facilitate transferring and it runs contradictory to what i have always been lead to believe.

https://youtu.be/p_OR2ZeMKNU?si=nGD50H7SgLnuEm-h

[Codsticker]

I am not a paint/pigment expert so I may be mis-remembering/misunderstanding what I read but I am unsure about using a FlowAid formula to thin paints in a bottle; that is not really it's purpose. If you use too much you could end up with overly thin paint with low surface tension; you will eventually get the same result by trying to add it in small amounts over time. If you have to thin paint, I think diluted matte medium is the better option as it is closest what pigment is suspended in at the factory. Probably best to get as much out as possible and then add a drop or two of water to chase the last bit out.