TLDR Hair color and length affect metabolite profiles in hair, so they should be considered in hair analysis.
The study investigated the influence of hair color and length on the analysis of endogenous metabolites in hair samples, which is important for retrospective monitoring of metabolome changes. Using untargeted data acquisition, the research analyzed metabolites in genuine hair samples from individuals with different hair colors and segmented the hair into 3 cm lengths. The findings revealed significant differences in metabolite profiles based on hair color and along the length of the hair strand. Consequently, the study concluded that both hair color and segment length must be considered in hair metabolomic studies and provided recommendations for best practices in this field of research.
12 citations
,
January 2020 in “Analyst” Researchers found markers that can tell if hair has been bleached, which could improve hair test accuracy.
9 citations
,
December 2018 in “Journal of Analytical Toxicology” Ethyl glucuronide levels in hair can change when exposed to artificial sunlight, depending on hair color and thickness.
48 citations
,
January 2018 in “Scientific Reports” Hair analysis can reveal metabolic changes and potential pregnancy complications.
24 citations
,
April 2016 in “Experimental Dermatology” Chemical treatments like dyeing, perming, and bleaching damage hair by altering amino acids and lipids.
January 2024 in “Metabolites” Standardized procedures are crucial for collecting and preparing biological samples to ensure accurate clinical metabolomics results.
August 2025 in “Current Issues in Molecular Biology” Periplaneta americana extract helps hair regrowth in mice with alopecia.
12 citations
,
January 2020 in “Analyst” Researchers found markers that can tell if hair has been bleached, which could improve hair test accuracy.
Forensic hair analysis for drugs is now more reliable and accurate.
Periplaneta americana extract promotes hair growth and is safe for treating hair loss.
