Washing Soda / Soda Ash (Sodium Carbonate)


Washing soda, also called sodium carbonate, or soda ash, has a strong degreasing and water softening power. It can be used throughout the house for laundry, dishes, cleaning and DIY. Its most common use is as a laundry detergent optimizer for hard water. Washing soda is also very useful for the maintenance of cloth diapers and greasy-stained clothes.

  • Fortifies laundry and softens hard water
  • Very useful for the maintenance of washable diapers
  • Soda crystals are non-toxic for the environment and for humans

Note: For all refillable products, a container will be automatically added to your cart unless it is labelled "pre-filled". For refillable products that are part of our Container Deposit Program, please see below for more details.

All refillable products that are part of our Container Deposit Program come in sanitized glass bottles. A $2.50 refundable container deposit will be automatically added to your cart. Please see below for Program details.

Any product denoted with an asterisk (*) is not part of our Container Deposit Program.

"Pre-order" products require a pre-order time, and some require a container deposit. Please see below for details.



sodium carbonate

To increase the efficiency of laundry detergent and soften water:
For colourfast fabrics - 1 to 2 tbsp soda ash
For white fabrics - 1/2 cup of soda ash
Add to the detergent drawer. This reduces limescale stains on fabrics and in the washer, which prevents fabric from greying due to limescale stains.

To remove stains from heavily soiled laundry:
1 to 2 tbsps soda ash
a basin of water
Before washing, soak the laundry. Use warm or hot water for white and light colours, and cool or warm for darker colours. Soak for 30 minutes or longer for very soiled laundry (fabric must be colourfast).

To clean cloth diapers:
Soak previously washed diapers for 48 hours in a mixture of 20 L of hot water, 250 mL of soda ash and a few drops of dish soap. This will remove soap scum and limescale.

CAUTION IRRITANT. CAUTION: Avoid contact with eyes. Protect from freezing. FIRST AID: Contact – flush eyes for several minutes. Ingestion - Drink plenty of water and do not induce vomiting. Consult a doctor, if necessary.

Container Deposit Program

Return, refill, reuse!

When you purchase refillable products online, there's a $2.50 container deposit to cover the cost of the selected container. This deposit is automatically added to your cart when you choose the product quantity, regardless of the size.

After using the product, you have three options:

  1. Return the empty container to get your deposit refunded.
  2. Visit our store to refill the container with another product.
  3. Keep the container at home and reuse it as you like!

Pre-order products

Advanced payment is required on pre-order items. A pre-order deposit is required on some large volume items.

Pre-order products can require a 10-day pre-order time, with some products requiring a 6-week pre-order time. "Pre-order" will be indicated on the product option when applicable.

A $15.59 refundable container deposit is required for 20L products. Simply select the product and add to cart, and the container deposit will be automatically added!