Causes of Dandruff Dry Skin: This is the most common cause of dandruff. Flakes from dry skin are usually smaller and less oily than those from other causes. Seborrheic Dermatitis: This condition affects areas rich in oil glands, such as the scalp, eyebrows, and sides of the nose. It causes greasy, yellowish scales to form on the skin. Sensitivity to Hair Products: Known as contact ... http://cosmetique.com.pk/dandruff-specialist.php