Contrary to conventional wisdom, down and feathers are naturally hypoallergenic because of their natural air permeability, which prevents moisture from condensing on the fibers and eliminate the breeding environment for dust mites.
The down fabric has downproofness, and the high-density fabric can prevent dust mites outside from entering the down filling, reduce the breeding of dust mites and help the people who are sensitive to allergies or asthma patients.
A New Zealand study found that down pillows are less likely to collect dust than other pillows made by synthetic fillings.
As early as the Tang Dynasty in China, the ancient documents have recorded the people who use down bedding and feather jackets for warmness and keep the children from epileptic disease. In this book also recorded the craft technology of down products.
A few people are still susceptible to down products when they touch the feather or accidentally inhaled down fibers. Therefore, a simple test is preferred for those who feel uncomfortable when wearing a down jacket: take a little bit of down cluster or a small piece of feather on their skin for a while. If there are itching, swelling, and other allergic reactions, means the body is allergic to down materials, people should try to avoid contact with down products. However, it is recommended that customers should follow the instruction from doctors on using medicine when they have allergies.