Fairy Gel, more properly known as Fairy Non Bio Gel, is a laundry detergent manufactured by Procter & Gamble. The packaging for Fairy Non Bio Gel includes a removable measuring cap designed to be left inside the washing machine during the wash. Using this gel for your laundry is simply a matter of measuring out the correct amount of detergent, depending on the water hardness in your area and on how soiled the clothes are.
Determine the level of water hardness in your area. Typically, the hardness of water increases the further south east in the United Kingdom you are located. You can consult a map (see Resources) for a general idea; however, you should check with your water supplier for precise information, since a soft water area can have pockets of hard water and vice versa.
Remove the measuring cap from the top of the detergent bottle and squeeze the correct amount of gel into it. If your area has soft or medium water and your clothes are lightly or normally soiled, use 37 ml of gel. If your area has hard water, your clothes are heavily soiled, or both, use 46 ml of gel.
Load the clothes into your washing machine as normal. Place the cap inside the washing machine, on top of the clothes, in an upright position.
Close the washing machine door and start the washing cycle as normal. When the cycle has completed, remove both the measuring cap and the clothes from the washing machine and replace the cap on top of the bottle.
If you have a washer-dryer, ensure you select a washing-only cycle and remove the measuring cap from the machine before starting the drying cycle.