A friend of mine has saved some used olive oil for 2 years.
She said that it smells.

I'm wondering about the quality of soap made with rancid oil.
Would it be a waste?

Other friend said that;
the oil is already spoiled.
If you use the soap, the oil residue will damage skin.
The oil of the soap would be the one that moisturizes skin.

I thought glycerin gives moisturizing effect.

thanks.