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In their review, the authors found no strong evidence supporting biotin's effectiveness as a hair supplement, noting a significant disparity between its popularity and scientific backing, with available studies showing no substantial benefit over placebo.

Using both minoxidil and biotin together increased hair growth more than using either one alone.

Taking biotin supplements for hair and nails may not be helpful and could cause harm.

In this study, researchers developed WS Biotin, a new water-soluble form of biotin, and found that it significantly improves water solubility compared to free biotin and enhances hair-related keratin expression, gene activity for hair growth in vitro, while also reducing melanin content in skin cells.

In this study, researchers found that biotin levels increase with age but not gender, and there is a notable negative relationship between biotin levels and triglyceride levels, suggesting biotin should be checked in patients with high triglyceride levels.

Biotin and collagen may help improve hair health.

In this randomized controlled trial, PRP combined with redensyl, saw palmetto, and biotin showed superior efficacy in improving androgenetic alopecia grading scores in male patients when compared to PRP with Procapil.

Biotin may help with hair loss.

This study concluded that the optimum biotin microemulsion hair tonic composition involves span 80 (20%), tween 80 (9.47%), and PEG 400 (5%), providing favorable viscosity and globule size.

This case report describes a girl with uncombable hair syndrome who showed significant improvement in hair combability and growth rate after two cycles of oral biotin supplementation.

In this case study, biotin supplementation was reported to interfere with free testosterone assay results, leading to falsely low readings in a postmenopausal woman with hyperandrogenism.

This review discusses the role of biotin in enzyme function and its effects on hair, skin, and nail health, noting that significant improvements are mostly seen in people with biotin deficiency, and reports no new clinical results.

This review discusses the risk factors, clinical presentation, diagnosis, and management of dermatoses linked to B-complex vitamin deficiencies, including biotin, but does not address risks from over-supplementation.

The researchers characterized a plant-based biotin supplement, SesZenBioTM, from Sesbania agati leaves, predicting it may enhance hair follicle growth more effectively than synthetic biotin based on molecular interactions and its biotin content.

This case report illustrates that high-dose biotin supplementation can cause false thyroid function test abnormalities in vitro, emphasizing the need to assess biotin intake before testing.

This study found that the combination of topical minoxidil and oral biotin significantly increased hair growth speed and density in healthy men, while neither intervention alone had a significant effect.

This study reported that a biotin-rich nutrition bar stored in aluminum foil packaging showed reduced bacterial growth and remained edible for 30 days compared to other packaging materials.

This study found that biotin supplementation significantly improved hair loss in telegon effluvium patients with low serum biotin levels.

Biotin may help hair and nails grow.

This study presents a method using liquid chromatography tandem mass spectrometry to quantify biotin in plasma and serum, and explores how high biotin intake can interfere with diagnostic immunoassays that utilize biotin-streptavidin technology, potentially leading to misdiagnosis of endocrine disorders.

This study found that a high dose of LustrivaTM, containing biotin and silicon, significantly increased hair thickness and reduced facial wrinkle depth in women with thinning hair compared to a placebo, without any reported adverse events.

This study found that patients with alopecia areata had lower serum zinc and biotin levels compared to healthy controls, suggesting these deficiencies may play a role in the condition's pathogenesis.

This review highlights the potential analytic interference of high-dose biotin with immunochemical tests, which may lead to diagnostic errors and suggests pausing biotin consumption before laboratory testing.

In this quasi-experimental clinical trial, researchers observed that topical minoxidil increased nail growth speed more than oral biotin in healthy adults, although combining them had no added benefit over minoxidil alone.

This article discusses the social popularity versus clinical efficacy of biotin supplementation for hair loss and reports no new results; it highlights the need to address media-driven myths.

This review discusses the evidence for biotin supplementation in treating hair loss, concluding that its benefits are poorly supported by data and advising against routine use without more compelling future trials.

In this study, the researchers evaluated the clinical efficacy of biotin supplementation compared to its social popularity, questioning the validity of its rising trend without providing specific outcome results.

Biotin may not effectively promote hair growth.

Biotin supplements did not significantly reduce hair loss in rats on valproic acid.

In this study, biotin supplementation was found to significantly increase wool follicle viability and metabolic activity in vitro, with the highest effects observed at 0.5 mg L⁻¹ concentration.