Which of the following practices should the nurse emphasize?

The correct answer is D: Use pH-balanced skin care products. This is important because pH-balanced products help maintain the skin's natural acidity, preventing irritation and maintaining a healthy skin barrier. Washing the face once a day with hot water (A) can strip the skin of its natural oils. Washing weekly (B) or scrubbing three times a day (C) can be too infrequent or excessive, causing skin issues. Therefore, emphasizing the use of pH-balanced products is crucial for proper skin care.