washing soda (sodium carbonate/soda ash)-$0.65/100g

Sodium Carbonate (aka Washing Soda or Soda Ash) is a highly alkaline substance that’s unique chemical composition makes it excellent for household uses like degreasing, brightening and cleaning tough messes.

Effective stain remover and is sometimes used as a water softener.

Laundry Booster

Add about 1/2 cup to a load of laundry, especially whites, to brighten, deodorize and get super clean!