| Answer | Crossword Clue |
|---|---|
| SODA | Water softener. |
| BORAX | Water softener. |
| BORAX | Water softener |
| CALGON | Water-softener brand |
| WASHINGSODA | Water-softener chemical |
| CALGON | Water softener brand |
| MINERALSALT | What a water softener removes |
| BORAX | Compound used as a water softener |
| borax | a white crystalline compound that consists of a hydrated sodium borate Na2B4O7À10H2O, that occurs as a mineral or is prepared from other minerals, and that is used especially as a flux, cleansing agent, and water softener, as a preservative, and as a fireproofing agent |
