Skin exhibits both hydrophobic and hydrophilic tendencies, depending on the specific area.
Hydrophobic tendencies are prominent on areas free of sebum, the oily substance secreted by the skin. These areas tend to repel water and are more resistant to moisture absorption.
Hydrophilic tendencies occur on sebaceous sites, where the presence of sebum makes the skin more attracted to water. These areas readily absorb water and are prone to moisture retention.
The hydrolipidic film on the skin's surface plays a crucial role in its wettability. This film is composed of sebum, sweat, and other substances, creating a balance between hydrophobic and hydrophilic properties.
Degreasing the skin with solvents or washing with soap and water can significantly alter its wettability, reducing the sebum content and increasing its hydrophobic nature.
Therefore, the answer to whether skin is hydrophobic or hydrophilic depends on the specific area and the presence of sebum.
