I agree with Cam's link to Bass Mousse. I have tried that recipe and the green plastics one. The Bass Mousse holds up better with the Arabic gum, I used Xanthan Gum. Both recipes are highly water soluble which is good in the long run but bad for storage and durability while casting. I found this video recently which shows dipping the lures in a glass of tannins. I believe you can pick up tannins at home brew marts or DIY wine making shops. I would love to have some kind of eco friendly plastisol to pour my own lures but haven't found anything yet.
https://www.youtube.com/watch?v=x2qKkrlyftQ&t=4s