Shampoo frequency depends on hair type, lifestyle, and preference. Oily, fine, and normal hair need frequent washing; dry, curly, coily hair benefit from sulfate-free shampoos. More washing is needed for active lifestyles, pollutant exposure, and product usage. Hydration through conditioning, deep treatments, seasonal adjustments, clarifying shampoos, and maintaining scalp health are crucial.Shampoo frequency depends on hair type, lifestyle, and preference. Oily, fine, and normal hair need frequent washing; dry, curly, coily hair benefit from sulfate-free shampoos. More washing is needed for active lifestyles, pollutant exposure, and product usage. Hydration through conditioning, deep treatments, seasonal adjustments, clarifying shampoos, and maintaining scalp health are crucial.