Hypoallergenic sheets and comforters are manufactured using materials that keep your bedding from becoming a home for dust mites and reduce the presence of mold and other allergenic materials. Sheets and comforters cannot of course be encased, and therefore can become a haven for dust mites and allergens in your bedding. Hypoallergenic sheets and comforters are also dye-free and chemical-free to further reduce the amount of irritant chemical compounds from the bedding.
The best materials that are found in hypoallergenic sheets and comforters include bamboo, silk, hypodown, natural cotton. Also materials that thermos regulate are best because they help avoid the presence of moisture in the bedding due to sweat or condensation, in addition to the obvious benefits of comfort while sleeping.