The purpose of this study is to test whether the reduction of the discomfort or itching with the scalp of patients by use of the novel electrolyzed water spray will produce improvement in the condition of the scalp.

In this study, water inculding tap water,pure water and salt water, and an apparatus for producing electrolyzed water (https://www.deposon.com.cn; https://www.deposon.com）were used to generate an electrolyzed water mist spray or spray. This instantly generated electrolyzed water mist spray or spray has oxidation-reduction potential (ORP) ≥1200mv,and contains non-specific total oxidation capacity which equals to 0.28±0.10ppm,0.06±0.04ppm and 3.92±0.39ppm of desolved ozone. This instantly generated electrolyzed water mist spray or spray does not release detectable ≥0.1mg/m3 of gaseous ozone. This instantly generated electrolyzed water mist spray or spray has pH 8.4±0.4 and releases negative air ion.The apparatus for producing electrolyzed water has a positive electrode which is covered by a conductive diamond material (Patent# CN215308550U). This is an open-label, single-arm and before and after treatment comparison study. In this study, this novel electrolyzed water device and the water spray are used to treat scalp itching. The reduction in the scalp of discomfort or itching evaluation and adverse event assessments will be performed at each visit. Safety analysis will be assessed based on the reports of adverse events during the study.

Inclusion Criteria:

• The patients with scalp discomfort or itching

Exclusion Criteria:

• severe scalp discomfort or itching; 80 years or elder

until publication of this clinical study and international patent granted