Lay the tie on a hand towel to absorb any dripping water, then tie it loosely around your neck.
To keep the tie cool while wearing, roll it to redistribute the gel or dip it in cold water for a few minutes.
Refrigerate extra cooling scarves for breezeless humid days. When one scarf reaches body temperature, swap it for a cool one.
Store wet scarves in an open plastic bag, hang them to dry, or store them in the refrigerator. After several days of drying, the crystals will return to solid form.
Want it even colder, or need a cold pack?
To make your own cold pack, soak in a 3:1, or greater, ratio of rubbing alcohol to water. The alcohol won't let the water freeze, and you'll have a cool pack out of your freezer that will be about the same consistency as an ice slushy from a convenience store! Remove from freezer sooner for a cooler tie than using a water soaked tie.
Want a warm tie or heat pad?
The temperature of the water dictates the heat contained by the Water Crystals. The best way to warm up a soaked tie (Use warm water to soak tie in before-hand) is to heat it in a microwave oven.
All microwave ovens vary, so we will not recommend a time. Instead, you should test the heat by warming for a short period, say 10-15 seconds. If the tie gets too hot to touch, wrap a layer of cloth around it--a hand towel or wash cloth.
Washing the tie.
Hand-wash crystal-filled tie using a few drops of liquid detergent. Rinse well and hang to dry.
Do not machine-wash or dry. Press the tie if desired only after the gel is completely crystalized.
Shake the crystals to one end of the casing to press the opposite end. Then flip and repeat. DO NOT iron the crystals or expose them to iron temperatures.