Ectoine is an amino acid derivative that can regulate cell osmotic pressure. It is a “protective shield” naturally formed by halophilic bacteria to adapt to extreme environments such as high temperature, high salt, and strong ultraviolet radiation After the development of Ectoine, it was applied in the pharmaceutical industry, and developed and produced various drugs, such as eye drops, nasal spray, oral spray, etc. It has been proven to be a substitute for corticosteroids without any side effects and can be used to treat eczema, neurodermatitis, approved for the treatment of inflammation and atopic infant skin; And approved for the treatment and prevention of lung diseases caused by pollution, such as COPD (chronic obstructive pulmonary disease) and asthma. Today, Ectoine is widely used not only in the field of biomedicine but also in related fields such as skincare.