softener
nounUK /ˈsɒfənə/
US /ˈsɔːfənər/
A softener is something you add to make things feel soft and nice.
Mom put fabric softener in the wash so the towels would feel fluffy.
OTHER MEANINGS
2. A substance added to water to make it less hard.
The plumber installed a water softener to stop the pipes from getting chalky.
3. A person or thing that makes something less strict or harsh.
His gentle voice acted as a softener during the tense meeting.
4. A chemical that makes a material like plastic or rubber more flexible.
The factory added a softener to the plastic so the toy would not crack.