1, depending on the needs of the skin. Washing your face with soda water for oily skin can inhibit oil, but you can't wash your face with soda water for dry skin.

2. baking soda water's treatment of skin problems is not only groundless, but also "burns" the skin. The component of baking soda is sodium bicarbonate, and the aqueous solution is weakly alkaline. The ph value of healthy skin is about 5.0 to 5.6, which is slightly acidic. Applying alkaline baking soda solution to the skin will destroy the natural barrier of the skin and make the skin more dry and sensitive. Some people with sensitive skin may also have stinging, redness and swelling "burns" symptoms.