Your skin isn’t the only feature that shows the signs of aging. Here are the most common changes in your hair that you may notice as you get older.
Graying is due to the loss of pigment-producing cells called ‘melanocytes’ in the base of the hair follicles. When less melanocyte cells are present, the result is less pigment being made and transferred into the outer shell (cortex) of your hair shaft, resulting in gray hair.
Numerous studies have shown a decrease in hair diameter with age. Hair is generally larger and thicker when young and then decreases steadily in size, beginning around age 40. Pre-menopausal women have larger hair shaft diameters (thicker hair) than post-menopausal women. This is likely due to a decrease in the population of stem cells in the hair follicle which determine the size of the hair shaft.
Hair often becomes “frizzier” with age. Many researchers suspect that this is due to the loss of synchronization, or timing of hairs, as they grow out together and produce curls and waves. The curve of the hair is determined by the amount of chemical bonding within the strands. If hair growth stops being synchronized, the production of waves or curl becomes incomplete and the result is frizz.
The sheen or shininess of hair results from the reflection of light off the cuticle (outer layer) of the hair shaft. The cuticle is composed of many plates that lie next to each other and overlap like shingles on a roof. The lipid (oil) in the skin acts like glue between the gaps in these puzzle pieces and will increase shine. With age the reverse happens; the lipids decrease, and the hair loses its sheen.
With age, the strength of hair deceases as the amount of chemical bonding diminishes. With less bonds, the hair can be more easily traumatized and result in breakage.
How to help your aging hair?
“Because the hair is often drier, more brittle, and less shiny with age, we need to adjust our hair care practices,” says Dr. Christine Shaver. Her suggestions include:
- Use wider tooth combs to not damage delicate hair.
- Cooler showers can help maintain the natural oils on the scalp and hair, as routine hot showering dries the scalp and strips hair of its natural oils.
- Conditioning may be more important to add back additional protein barriers to protect the hair shaft.
- Avoidance of chemical and heat should always be emphasized, as this can cause hairs to weaken and subsequently crack, break, and cause more dryness and frizz.
Updated: 2023-08-15 | Published: 2021-05-07