Hair Cortisol and Other Hair Analytes Decline With Storage Over a One-Year Period: A Systematic, Within-Subject Investigation
September 2025
in “
Psychoneuroendocrinology
”
Research cited in this study
3 / 3 resultsresearch What Is the Best Sampling Region for Endocrine Hair Analysis? A Comparison Between the Posterior Vertex and Occipital Region and Recommendation for Standardization
9 citations , April 2025 in “Psychoneuroendocrinology”research Hair Lipid Structure: Effect of Surfactants
2 citations , July 2023 in “Cosmetics” Surfactants in shampoos and conditioners remove some but not all lipids from hair, and more research is needed to understand their full impact.
research Hair Analysis for Drugs of Abuse: Plausibility of Interpretation
60 citations , December 2005 in “Biomedical Papers” Hair analysis can detect drug use but requires careful interpretation due to its complexity.
Related Community Posts Join
6 / 1000+ resultscommunity 1 year of finasteride.but from past month i am noticing my hair density is decreasing. I think it’s seasonal shed or 😭
in Progress Pictures 98 upvotes 2 years ago User experienced hair density decrease after 1 year of finasteride. Others shared similar experiences, suggesting it could be a temporary shed and discussed various treatments like dutasteride, minoxidil, dermaroller, and ketoconazole.
community My annual shed is a test of will, patience and emotional toughness
in Finasteride/Dutasteride 25 upvotes 2 years ago Annual hair shedding occurs for user, lasting 3 months, despite various factors. User takes Finasteride, Minoxidil, and Dutasteride, and experiences regrowth but fears weakening hairline.
community Hair quality after 1 year on finasteride only (no minoxidil)
in Progress Pictures 59 upvotes 7 months ago The user shared progress after one year on finasteride, noting slower results without minoxidil and using ketoconazole shampoo for dandruff. Suggestions included adding minoxidil, microneedling, and possibly seeing continued regrowth in the second year.
community For those of you using hair drugs, how long did you use them before progress peaked/stopped?
in Chat 8 upvotes 2 years ago The conversation is about someone using minoxidil, finasteride, RU58841, and microneedling for hair loss treatment for nearly two years with ongoing improvement. They are questioning the likelihood of continued hair regrowth over a four-year period.
community My hair progress from 2022 to 2025 (current)
in Progress Pictures 1106 upvotes 1 year ago A 47-year-old male shared his hair regrowth progress from 2022 to 2025, using finasteride 1mg daily, managing stress, and avoiding minoxidil due to an allergy. He experienced noticeable hair improvement, despite some skepticism about a comb-over, and emphasized the importance of stress management alongside treatment.
community Current progress after one year
in Progress Pictures 9 upvotes 11 months ago The user, 31, shares their hair regrowth progress after one year of using Minoxidil inconsistently, becoming more consistent in the last six months, and adding The Ordinary hair density serum. They wash their hair with Hims shampoo, microneedle monthly, and avoid DHT blockers due to potential side effects.
Similar Research
5 / 1000+ resultsresearch Hair cortisol analysis: An update on methodological considerations and clinical applications
237 citations , September 2018 in “Clinical Biochemistry” Hair cortisol analysis can help diagnose stress-related conditions but needs more refinement for widespread use.
research Hair cortisol as a novel biomarker of stress
May 2012 in “Neurotoxicology and Teratology” Hair cortisol can be a reliable way to measure long-term stress.
research Applications of Hair as a Record of Systemic Exposure to Cortisol
January 2019 Hair cortisol content can indicate cortisol exposure and varies with age, puberty, and BMI in youth.
research Faculty Opinions recommendation of Clinical applications of cortisol measurements in hair.
February 2017 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Hair cortisol measurement is a promising, non-invasive tool for monitoring cortisol exposure over time.
research Determinants of hair cortisol and hair cortisone concentrations in adults
157 citations , June 2015 in “Psychoneuroendocrinology” Hair cortisol and cortisone levels increase with age, are higher in diabetics, vary by gender, decrease with frequent hair washing, and are lower in winter.