From the Research
Skin turnover in a 52-year-old typically takes about 45-60 days, which is longer than the 28-30 days observed in younger adults. This process involves the complete renewal of the epidermis, where new skin cells form in the basal layer and gradually move upward until they reach the surface as dead keratinocytes that eventually shed. With aging, this cellular turnover slows due to decreased cell proliferation rates, reduced enzymatic activity, and diminished blood flow to the skin 1. Hormonal changes, particularly decreased estrogen in women and testosterone in men, further contribute to this slowdown. The extended turnover time explains why older adults may experience longer healing times for minor skin injuries, more persistent hyperpigmentation, and slower response to topical treatments.
To support healthier skin turnover, maintaining good hydration, using gentle exfoliation 1-2 times weekly, applying moisturizers with ingredients like retinoids, alpha hydroxy acids, or peptides, and protecting skin from sun damage with daily SPF 30+ sunscreen can be beneficial 2. Additionally, topical hyaluronic acid (HA) has been shown to improve skin hydration and reduce signs of skin aging, making it a potential adjunct to other skincare routines 3. Some key points to consider for supporting skin health include:
- Maintaining good hydration through adequate fluid intake and topical moisturizers
- Using gentle exfoliation techniques to remove dead skin cells without causing irritation
- Applying moisturizers with ingredients that support skin health, such as retinoids or peptides
- Protecting skin from sun damage through the use of daily SPF 30+ sunscreen and other protective measures
- Considering the use of topical HA or other skincare products that support skin health and reduce signs of aging.