[bigdave]

Thanks for all the input folks!

I guess my question wasn’t clear. Can the MW of the polymer play a role in the stopping the ACTIVE from penetrating, not the polymer itself?

[bigdave]

EliseCortes:

I have used Tremella and Sclerotium. Tremella can almost match Carbomer in viscosity, but leaves a very thin, non-tensile film. Sclerotium, is the same, with a little more tensile feel.