Sex Hormones Regulate Skin Stem Cell Healing Processes
A study in mice reveals how hormones like testosterone and estrogen influence the rate at which skin stem cells mature.
Updated on Oct. 21, 2026 in Women’s Health
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New research reveals that sex hormones play a critical role in how skin stem cells mature and heal wounds. While the findings were observed in mice and laboratory human cell cultures, they offer insight into how biological sex influences skin regeneration.
Why it matters
Understanding how estrogen and testosterone direct skin stem cell behavior could explain long-standing differences in how skin heals and ages between sexes. These insights represent an early look at how hormonal signals might one day be targeted in dermatological treatments.
This preclinical study tracked 1,171 cell families in mice over 140 days and tested human cell cultures to determine migration rates. While the results demonstrate how hormones influence cell maturation, the study is preliminary and does not account for complex human skin health.
The players
Université Libre de Bruxelles
A research university based in Belgium where scientists conducted the study on skin stem cell lineages.
University of Cambridge
A research institution in the United Kingdom that provided the mathematical modeling used to analyze cell family sizes.
The details
Researchers found that testosterone binds to receptors on skin stem cells, accelerating their maturation and migration out of the basal layer. In contrast, estrogen encourages stem cells to divide in coordinated pairs, keeping them in the basal layer longer, which contributes to the faster wound closure observed in females. These hormonal effects on cell exit and division rates were consistent regardless of chromosomal sex, depending instead on testicular development.
Timeline
• 4 hours: Window used to observe active cell division.
• 4 days: Time elapsed between tagging cells and finding daughter pairs.
• 12 days: Period tracked for wound closure in mice.
• 140 days: Total duration of the mouse skin filming observation.
Health Landscape
This research expands the understanding of skin biology by identifying specific hormone-driven mechanisms that govern stem cell behavior. It follows a pattern of investigation into how intrinsic biological factors influence the regenerative capacity of tissue.
While these findings in mice provide a glimpse into the biological differences in skin healing, they are not yet applicable to individual patient care. Any questions regarding changes in your skin health should be discussed with a dermatologist to determine if they require medical attention.
The takeaway
The study suggests that sex hormones fundamentally shape the pace and pattern of skin regeneration. For now, focus on established skin care practices like sun protection and moisturizing, and speak with your physician if you notice persistent changes in how your skin heals.
Further reading
Learn more about the latest developments in Women’s Health.
Source note: This article includes information reported by Earth.
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