I've found tidbits relating to this but wanted to know directly your thoughts on: What blend of propylene glycol to TEA is enough to thin the viscosity at lower household temperatures (ie, 60 F°)? What is the general solvent effect difference as one blends in the PG vs straight TEA? My understanding of Dimezone-S vs Phenidone is that the Dimezone is more stable in water solutions. Is there any advantage for using it in PG/TEA type of concentrates? Will the PG interact any differently with concentrate solutions (vs straight TEA) when Pyrogallol is involved? I'd better quit adding items to this post for now!