Response by: Chloe, March 12th 2018 11:47:19 pm

Adnan - presumably you are talking about latex adhesive when you say the product has gotten too thick?  If so, you can use latexine to thin the solvent based latex adhesive:

https://mjtrends.com/products.Latexine,Adhesive-Cleaner,Notions

If it is the ammonia based adhesive, you can thin it with water.  If latex adhesive is not what you are referring to then please post with detailed information.  It is hard for users to guess what you are referring to ;)