can make dryness worse. In this case, it is better to “try 1–2x/week with moisturizing shampoo” to soothe the skin.
Scalp Issues: For those dealing with dandruff, specialists often suggest using a “medicated shampoo (e.g., with zinc pyrithione) 2–3x/week” to keep the scalp balanced.
3. Your Daily Lifestyle and Environment
External factors play a big role in how dirty your hair gets.
Physical Activity: If you “sweat heavily (exercise, hot climate)”, you should plan to “wash after intense workouts” to remove salt and sweat.
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