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This study demonstrated that hair follicles significantly expedite the absorption of caffeine through the skin compared to interfollicular pathways.

This study identified flavonoids and phytosterols in a medicated cosmetic cream developed for androgenic alopecia and proposed methods for their identification and quantification.

This review discusses the development and application of multiphoton microscopy in dermatology, highlighting its advantages and potential future research directions without reporting new clinical results.

This review discusses various strategies to enhance drug delivery through the skin barrier, highlighting liposomes as promising carriers for increased dermal concentrations in topical therapies, but reports no new research results.

This study investigated the ability of a human hair keratin dimer to absorb the pollutants diclofenac and perfluorobutane sulfonate, finding high binding affinities that suggest potential for hair-derived materials in water filtration technologies.

This study found that hair follicles are a significant and efficient pathway for the absorption of topical minoxidil foam in humans, with faster blood detection when follicles are open.

In this study, researchers found that 2 out of 9 analyzed cosmetic hair growth products contained the banned substance minoxidil, demonstrating the presence of this antihypertensive drug in some cosmetics despite regulations.

This study found that caffeine and flufenamic acid penetrated porcine skin more effectively through hair follicles, while the importance of the follicular pathway varied for other substances tested.

This study found that α-tocopheryl acetate is well absorbed through healthy skin, with absorption occurring through specific pathways and showing high affinity for small blood vessels.

Some chemicals absorbed through the skin can cause serious health problems.

This infographic compares the safety profiles of SH‑1, a cosmetic ingredient, which showed no systemic absorption, and PP405, an investigational drug with dose-dependent systemic uptake and potential threshold breaches, highlighting differences in safety between cosmetic and investigational substances according to this report.

This study explored the potential of human hair keratin as a filtration material, finding that it may effectively absorb the pollutants diclofenac and perfluorobutanesulfonate. The researchers reported significant binding affinities through molecular simulations, supporting further investigation into keratin's use for water purification.

This study demonstrated that stress inhibited hair growth in mice, likely through substance P-dependent activation of immune cells, highlighting a brain-hair follicle connection.

This study reported that larger caffeine nanocrystals, at 694 nm, increased caffeine bioavailability via transfollicular penetration compared to smaller nanocrystals, especially in long-term serum concentration measurements.

This study found that pretreatment combining maceration with press-shear force and moist heat significantly increased the total phenolic and flavonoid contents in galactagogue herbs like banana inflorescences and Thai ginger.

In this literature review, potential health risks of toxic chemicals commonly found in cosmetic products were linked to issues such as cancer, reproductive abnormalities, and skin diseases, highlighting concerns over ingredients like talc, parabens, and phthalates.

This commentary discusses the potential of natural volatiles in medical aromatherapy, highlighting their ability to synergize with other drugs and modulate biological processes, but reports no new results.

This study concluded that the follicular route is a significant pathway for delivering gentamicin through the skin, as demonstrated by higher drug permeation in non-plugged pig's ear skin compared to plugged skin.

In this study, researchers introduced calcium carbonate-based carriers for transdermal drug delivery, observing efficient transport of substances and systemic absorption in rats, suggesting potential applications in regenerative medicine and dermatology beyond conventional topical treatments.

This study analyzed watercress oil and confirmed its phytochemical profile, UV absorption properties, and potential efficacy for hair growth, supporting traditional hot oil applications.

The researchers reported that caprylic acid effectively enhances the permeability and diffusion of minoxidil through rat skin compared to other penetration enhancers.

This study found that the new HCC additive enhances the permeation of pigments and active ingredients into hair, suggesting potential use in developing functional cosmetic hair products.

In this study, researchers developed an emulgel formulation containing minoxidil for hair growth, using chitosan and fucoidan as gelling agents, achieving controlled drug release with 99.7% released by the 12th hour.

In this study, different treatments on ex vivo skin models effectively simulated varying levels of skin damage, demonstrating the value of these models in testing skin repair products and studying how a compromised skin barrier affects viral penetration.

This abstract reviews potential health risks from toxic chemicals in cosmetic products, noting associations with cancer, reproductive issues, and other health conditions, but reports no new research findings.

This study reported that supplementation with inositol, biotin, cystine, or methionine prevented hair loss in rats fed soybean oil meal, with cystine and methionine also significantly increasing growth rates.

Iodine is absorbed by hair just below the skin surface.

This study found that methyl nonanoate and methyl caprate significantly enhanced the skin penetration of minoxidil compared to solutions with other common enhancers like Azone, DMSO, or DEET.

This study found that apple polyphenol extract, particularly oligomeric procyanidins, inhibited pancreatic lipase activity and reduced triglyceride absorption in both mice and humans.

This case report documents an instance of symptomatic hypothyroidism developing in a patient with papillary thyroid carcinoma after beginning treatment with orlistat.