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In this study, washing rhesus monkey hair with water or shampoo significantly reduced cortisol levels, suggesting potential underestimation of chronic stress hormone deposition in hair due to washing.

Hair chromium levels reflect nutritional status after standard washing.

This study of Danish women found no evidence linking hair cortisol concentration to hair dyeing status or the frequency of hair washing.

This review discusses the evolution of modern shampoos from basic cleansing agents to products with specific therapeutic uses and emphasizes the importance of dermatologists understanding shampoo mechanisms and appropriate selection for scalp and hair health.

This paper presents two cases of hair tourniquet syndrome and suggests washing baby socks inside out as a potential preventative measure.

The study found that sonication washing of hair roots with fewer than 50 visible nuclei could reduce the number of nuclei available for DNA extraction and STR typing, suggesting that for laboratories focused on nuDNA analysis, a gentler washing method might be adequate.

This study found that washing hair after reduction in a permanent waving process allows for significant reformation of disulfide cross-links, enhancing the strength and elasticity of hair fibers.

This study found that 12 cycles of chlormadinone acetate in hormonal contraceptives significantly improved oily skin and hair quality, enhancing psychosocial well-being in healthy women.

This model study describes how interactions between hair keratin and various materials alter hair's physical and mechanical properties by affecting noncovalent bonds.

In this study, researchers highlighted that while hair lipids are crucial for hair health and protection, surfactants in shampoos and conditioners can partially remove these lipids, potentially affecting hair structure, though the exact mechanisms remain poorly understood and require further investigation.

Using hair oil/grease may be linked to dandruff in African American girls.

This study found that hair testosterone concentrations show some consistency over time, but factors like hair washing and individual growth rates influence these levels, suggesting the need for careful sampling and analysis adjustments.

In this study, researchers found that while chest hair can be a reliable alternative to scalp hair for ethylglucuronide testing, seasonal factors may affect concentration levels and should be considered in result interpretation.

This study found that DNA is present at low levels in human hair shafts, with higher amounts near the root, and that its levels decrease after surfactant washing and colorant treatments.

This article highlights the increasing impact of methicillin-resistant Staphylococcus aureus as the most significant multi-drug-resistant organism affecting surgical settings, but reports no new experimental results.

This case report of a 17-year-old with salt-wasting congenital adrenal hyperplasia due to 21-hydroxylase deficiency found that increasing the mineralocorticoid dose relieved daily headaches and reduced salt cravings.

This study found that polyquaternium-68 at pH 9 achieved the greatest hair deposition, while polyquaternium-44 demonstrated the best wash resistance at pH 6.

This review presents evidence that correlations exist between hair mineral imbalances and various diseases, though inconsistencies in results highlight the need for standardized preparation methods.

This study found that the washing method can help differentiate chronic telogen effluvium from mild female pattern hair loss, potentially reducing the need for biopsies.

This study describes a new mite species from marmots in a city park in Washington, noting that infested marmots displayed significant hair loss and tissue abnormalities.

The man's symptoms improved significantly after penicillin treatment for syphilis.

This study found that a genetic deletion causing truncated desmoglein 3 protein in mice led to severe pathologies, including cyclic hair loss and immunodeficiency, suggesting possible implications for human desmosome-related diseases.

This report documents two cases of severe systemic poisoning from heavy metals after short-term use of traditional Chinese medicines for treating damaged or infected tissue.

This study explains that congenital adrenal hyperplasia due to 21-hydroxylase deficiency presents as a continuous phenotype and involves symptoms ranging from virilization to accelerated growth in children, with diagnosis relying on clinical, biochemical, and genetic evaluation.

This article reviews the pros and cons of co-washing for hair cleansing and presents no new clinical results; the authors describe potential residue buildup as a drawback.

In this study, using sterile gloves during hair restoration surgery did not reduce scalp contamination compared to clean gloves due to the natural microbiome of the scalp.

Congenital Adrenal Hyperplasia is mainly caused by enzyme deficiencies, leading to varying symptoms like hormone imbalances and physical changes.

This study found that washing hair with surfactants reduces the internal density of hair due to cuticle lifting, and suggests that a cuticle-sealing strategy can inhibit this effect and maintain hair homeostasis.

This study found that daily hair washing was associated with significantly lower hair cortisol concentrations, suggesting it may influence the accuracy of using hair cortisol as a biomarker for chronic stress.

Hair cortisol levels can indicate stress and are affected by washing frequency, not cosmetic treatments.