softening
1. [ adjective ] having a softening or soothing effect especially to the skin
Synonyms: emollient salving demulcent
Related terms: soft
2. [ noun ] the process of becoming softer
Examples:

"refrigeration delayed the softening of the fruit" or "he observed the softening of iron by heat"

Related terms: natural_process maceration soften
Similar spelling:   soften
  softener
  softened
  soft_on