First, make sure your soap is completely dry before storing it. A humid environment can cause the soap to become soft or rancid. Allow the soap to cure in a dry, ventilated place for at least 4-6 weeks before storing.
The ideal storage temperature for homemade soap is between 5 and 25 degrees Celsius. Make sure you store it in a cool, dry place and avoid direct sunlight. Many people store their soap in the wardrobe, for example, to benefit from the soap scent.
A good way to store your soap is in a paper towel or cotton bag. This allows it to breathe and any remaining moisture to escape, while keeping the soap protected. Avoid wrapping it in plastic wrap as this can cause it to sweat and become soft.
If you store your soap for a long time, check it occasionally to make sure it doesn't go rancid or lose quality. Homemade soap can keep for more than a year if stored properly.
By storing your homemade soap properly, you can ensure that it will last and retain its effectiveness so that you can enjoy it for a long time to come.