The duration required for henna application to achieve a hardened surface layer is a variable influenced by multiple factors. This process involves the surface moisture evaporating, allowing the paste to become less susceptible to smudging or accidental removal.
Proper drying of the henna paste is crucial for optimal staining. A partially dried application can lead to a faded or uneven result, diminishing the intricacy of the design. Historically, methods to prolong the moistness and contact of the paste with the skin have been employed to enhance the depth and longevity of the color.