That helps, but to be sure it doesn't get hard you can add a couple tablespoons of vegetable glycerine. (mariamindbodyhealth.com)
Kitty Senior is a singular product, combining natural extracts and sweet - tasting vegetable glycerine for max palatability, which will assist keep supple joints and muscles and overall well being for Older cats. (gulfcoastvetspec.com)
This pure, certified organic vegetable glycerine is derived from soy and is used in cosmetics and body care products to assist in retaining moisture and is helpful in pulling oxygen into the skin. (mountainroseherbs.com)