ArticlePloS one2023
Effect of cosmetic hair treatment and natural hair colour on hair testosterone concentrations.
Article in PloS one, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed, 5 citations in OpenAlex.
- Low Pregnancy Cortisol and Infant Socioemotional Problems: The Mediating Role of Postpartum Depressive Symptoms.Developmental psychobiology · 2026Article
- Beyond the Mission: Long-Term Endocrine Dynamics in Search and Rescue Dog-Handler Teams.Animals : an open access journal from MDPI · 2026Article
- Cholesterol profiling reveals 7β-hydroxycholesterol as a pathologically relevant peripheral biomarker of Alzheimer's disease.Psychiatry and clinical neurosciences · 2024Article
- Hair dehydroepiandrosterone sulfate as biomarker of employees' well-being? A longitudinal investigation of support, resilience, and work engagement during COVID-19 pandemic.Frontiers in psychology · 2024Article
Corrections and comments
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Authors and funding
5 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTestosterone analysis in hair allows for retrospective evaluation of endogenous testosterone concentrations, but studies devoted to investigating confounders in hair testosterone analysis have hitherto been scarce. The current study examined the stability of testosterone concentrations between two hair samples collected three months apart and investigated two potential confounding factors: natural hair colour and cosmetic hair treatments.
methodsTestosterone was analysed with an in-house radioimmunoassay with a limit of detection adequate for the purpose.
resultsThe testosterone concentrations from the two samplings, at baseline and three months later, had an intra-individual correlation of moderate strength (rho = 0.378, p<0.001, n = 146). Hair treatment, such as colouring or bleaching, seemed to increase testosterone concentrations (p = 0.051, n = 191, and in a paired analysis in a subset of the cohort p = 0.005, n = 24), while no effect of natural colour in untreated hair (p = 0.133) could be detected.
conclusionThe current results suggest that cosmetic hair treatments need to be considered in hair testosterone analyses and demonstrate the utility of a radioimmunoassay to reliably measure testosterone concentrations in small hair samples in women.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.