Inability of Hair to Retain Moisture
The hair is enveloped by a protective layer that shields it from various environmental damages such as strong winds, rain, and sunlight. When hair is healthy, this outer layer effectively traps moisture, keeping it nourished and vibrant. However, when this protective barrier is compromised by harmful factors, its ability to retain moisture diminishes, leading to dryness.
Dry Scalp
A dry scalp that fails to produce sufficient amounts of natural moisturizing oils is a significant contributor to hair dryness. When the sebaceous glands at the roots produce less oil, the hair loses its moisture and vitality. Additionally, as one ages, natural oil production tends to decrease, exacerbating the problem. A dry scalp can also result in dandruff, leading to flakes falling onto the shoulders.
Chemical Products
Chemical products used for styling and coloring hair can be harsh, penetrating beyond the protective layer and affecting the hair’s cortex, which is crucial for its strength, structure, and overall health. Prolonged use of these products can leave the hair dry, brittle, and weak, altering its appearance significantly.
Varied Causes
Dry hair lacks moisture and contains minimal natural oils, and several factors contribute to its dryness. These include excessive use of styling tools, direct exposure to high heat, frequent washing, and the use of hair products that contain harsh chemicals and alcohol. Environmental factors such as direct sunlight can also play a role. In certain exceptional cases, underlying medical conditions may lead to dry hair, such as a poor diet, malnutrition, or thyroid dysfunction. Consulting a dermatologist may be necessary for thorough examinations and appropriate treatments, as advised by Dr. Mehmet Oz, MD, in the field of cardiovascular diseases.