Understanding Poliosis: Why Grey Hair Appears in Patches

Patchy grey hair, or poliosis, can be a surprising shift in your personal style journey—especially for those with naturally textured, curly hair. Poliosis results from the loss or dysfunction of melanocytes—pigment-producing cells within our hair follicles. When these cells stop working in specific areas, the hair in those regions loses its color and appears grey or white.

Though often harmless, poliosis is complex and linked to a variety of genetic, autoimmune, and lifestyle-related causes. A better understanding of the root causes can empower you to care more confidently for your evolving hair story.

What Causes Patchy Grey Hair?

Poliosis reflects pigment disruption in localized hair follicles. Whether it’s a streak in your hairline or your brows, identifying the cause can support targeted care. Below are the primary contributors:

• Genetic Conditions: Disorders like piebaldism, Waardenburg syndrome, and tuberous sclerosis can cause white patches due to mutations affecting pigment cells.
• Autoimmune Issues: Conditions such as vitiligo can cause the immune system to mistakenly attack melanocytes.
• Infections and Medications: Illnesses like shingles or treatments like chemotherapy may lead to melanocyte damage.
• Nutrient Deficiencies: Lacking vitamins and minerals (B12, iron, zinc, etc.) needed for pigment production can result in uneven greying.
• Hormonal and Environmental Factors: Thyroid disorders and oxidative stress from smoking can hasten melanocyte dysfunction.

Is Patchy Greying a Medical Concern?

Generally, poliosis is harmless. However, if greying appears suddenly or in childhood, it may signal an underlying condition worth evaluating with a healthcare provider. Contrary to popular belief, stress alone is not a proven cause of patchy white hair—biological factors tend to be more significant.

For our community of style-savvy adults embracing grey hair with texture and character, it’s important to approach patchy greying with knowledge and care. Gentle products that support scalp health, moisture, and follicle integrity are essential for both appearance and confidence.

—-

Manhattan Grey is a line of premium moisture products formulated for textured grey hair. Our signature products are a lightweight pomade and hydration oil help to eliminate dryness, prevent breakage, and sooth itching. It’s also safe to use on our skin and facial hair.

We are committed to giving our customers, who have been largely overlooked by the beauty and personal care industry, a product experience that offers premium hair care products uniquely blended to address the challenges of grey or greying hair.

Click here for 20% off your first purchase

Subscribe to our YouTube channel