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Skin pH refers to the measure of acidity or alkalinity of the skin's surface. The pH scale ranges from 0 to 14, with 7 being neutral. Values below 7 are acidic, while those above 7 are alkaline. The skin's pH plays a crucial role in maintaining a healthy skin barrier and overall skin health. Here's an in-depth exploration of skin pH in 600 words: Normal Skin pH: The skin's surface has an average pH ranging from 4.5 to 5.5, making it slightly acidic. This natural acidity is primarily due to the presence of an acid mantle, a protective film formed by sebum, sweat, and natural skin oils . The acid mantle helps create an inhospitable environment for harmful microbes, maintains moisture balance, and supports the skin's protective barrier function. Importance of Skin pH: Skin Barrier Function: The skin's acid mantle and its slightly acidic pH help preserve the skin barrier, which serves as a protective shield against environmental pollutants, allergens, pathog