I added hyaluronic acid to my CP soap. I know it’s best used as a leave on ingredient. I bought it for that purpose, but I was curious how it would behave in CP. I do not sell any of my soap or anything I make. It’s for personal use or gifted to my family and friends. So, I made a 1% hyaluronic acid stock, then I used that as 20% of my water weight. Which ended up being 1.5 oz. It was a 2 lb batch of soap. 37% lye concentration. I added the hyaluronic acid stock after trace. It blended right in. I cut the soap this morning. It was very hard, but I used tallow and kokum butter, so I expected that. No weeping or leaking or moisture. Nothing weird. Also, I used extra strength brewed coffee for the other 80% of my liquid. I’ll update as it cures if anything interesting or weird happens. There was no information on doing this anywhere, so we’ll see.