Does glycerin soap have less foam?

[Ali said]

I make liquid soap with olive oil, coconut oil, sunflower oil and castor oil. Since I didn't like the smell, I used half the water as glycerin. The result is very good. It was a nice soap. But its foaming has weakened. Does glycerin soap weaken the foam? Has anyone tried it?

 

[DeeAnna]

I have diluted liquid soap paste using a mixture of water and glycerin (about half and half if I remember correctly).

I found it lathered a bit less than the same soap soap diluted only with water.

So my results agree with your experience.