Tremella can be soaked in cold water for half an hour, but it should be noted that it will take a long time to soak in cold water, and it usually takes about 2-3 hours to soak completely. If time is tight, you can choose to soak your hair with warm water or hot water, which can shorten the soaking time.

It should be noted that when soaking tremella, dry tremella without impurities and odor should be selected, put in clear water, soaked in proper amount of white vinegar or edible alkali for 20-30 minutes, and then rinsed with clear water.