So here it is the perfect thing for me to try this method Jenny did and it worked.
The ash floats especially on the white part.
Close-up of the soda ash almost covers the whole white part the 2nd day the soap log was cut. And I know it's gonna spread and cover more area.
After steaming (by holding the soap surface over boiling water), the soap is shining freshly.
A close-up on the surface. It even enlarged the tiny crack line.....
Right after steaming, the soap looks great. Once they got dry, the sheen becomes a little bit dull but still nice.