The duration henna paste remains in contact with the skin is a crucial determinant of the resulting stain’s darkness and longevity. For instance, leaving the paste on for two hours yields a significantly lighter stain than allowing it to remain for six hours or longer. This time directly influences the amount of dye transferred to the skin.
Proper duration is essential for achieving the desired aesthetic outcome in body art and hair coloring. Historically, varied application times have been observed across cultures, reflecting differences in henna quality, climate, and aesthetic preferences. Optimal contact leads to deeper, more vibrant stains that endure for a longer period.