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This review discusses the potential link between long-term transdermal exposure to sex hormones from antiperspirants and increased breast and prostate cancer rates, calling for further research to confirm this theory.

This study found that the optimized finasteride-loaded lyophilized tablets using a self-nanoemulsifying drug delivery system improved bioavailability in human volunteers compared to the marketed finasteride product.

This study found that alkali bromide solutions are absorbed into hair depending on salt activity, and the presence of the salt increases water absorption compared to normal conditions.

This study found that Finasteride may spontaneously diffuse into an SDS-based model cell membrane at a significant rate, with distinct behavior in polar and non-polar solutions.

Topical minoxidil may slow hair loss but often doesn't lead to satisfactory hair regrowth and requires ongoing treatment.

This study found that zinc methionylglycinate supplementation improved haircoat characteristics and zinc absorption in dogs compared to zinc sulfate.

This study found that the dimethyl-β-cyclodextrin inclusion system significantly improved the solubility and bioavailability of finasteride compared to the drug alone, enhancing its absorption rate.

This study found that hair follicles contribute significantly to caffeine absorption shortly after topical application, with a faster absorption rate compared to the stratum corneum.

This study observed that hairless rat skin was more permeable to mannitol and progesterone than hairy rat skin, indicating that follicular structures significantly impact percutaneous absorption.

This study found that using nanoporous silica entrapped lipid-drug complexes enhanced the solubility and bioavailability of dutasteride in beagle dogs.

This study found that topical minoxidil solutions showed the highest skin permeation at 3-4% concentrations, with crystallization occurring at a 5% concentration due to vehicle component evaporation.

This study found that microspicule cosmetics with low-molecular-weight peptide complexes significantly improved skin whitening, pore condition, and skin barrier function over four weeks compared to a non-microspicule formulation.

This study developed analytical methods to better understand hair treatment with cosmetic formulations, revealing that active agents primarily adsorb on the hair surface during short washes.

This review discusses the role of iron from cosmetic sources in skin nutrition and reports no clinical results, highlighting its significance for skin, hair, and nail health.

In this study, two cases of generalized hypertrichosis in young children were reported as resulting from indirect exposure to topical minoxidil through skin contact with caregivers, emphasizing the importance of preventing unintended contact and recognizing potential reversible side effects in pediatric populations.

This article discusses the foundational concepts of nanotechnology and its contributions to dermatology and medicine, but does not present new research findings.

This study found that low-level laser therapy with an 830-nm wavelength most significantly stimulated hair growth in rats, compared to other wavelengths tested.

This animal study found that biscuits fortified with zinc oxide nanoparticles improved growth, appetite, and hair growth in zinc-deficient rats more effectively than traditional zinc forms, without apparent toxicity.

This study found that topically administered spironolactone in healthy volunteers resulted in no detectable systemic absorption or changes in related hormone levels over 72 hours, indicating local effect only.

This study found that adapalene-loaded microemulsions significantly enhanced the drug's penetration through guinea pig skin compared to an aqueous suspension, with factors like surfactant ratios and the water-oil phase balance affecting the transfollicular drug delivery efficiency.

This research suggests that geometric classification of hair into fewer groups may be more reliable and useful for studying hair characteristics, rather than racial descriptions, especially in medical and forensic applications.

This study found that zinc, copper, and chromium levels were significantly lower in the hair of Korean individuals with schizophrenia compared to healthy individuals.

This study concluded that Flaxin tablets and the reference formulation are bioequivalent in terms of absorption rate and extent when administered as a single 5 mg dose to healthy male volunteers.

This study concluded that two different pharmaceutical formulations of finasteride were bioequivalent in terms of rate and extent of absorption based on pharmacokinetic evaluations in a randomized crossover study with 38 volunteers.

This study found that two different 5 mg finasteride tablet formulations are bioequivalent in terms of the rate and extent of absorption in healthy volunteers.

In this study, chitosan glycolate sponges demonstrated the highest cell survival rates and blood absorption, highlighting their potential as hemostatic materials, whereas chitosan ascorbate sponges inhibited cell growth and metabolic activity, indicating further development is needed.

This study of Black and Hispanic inner-city teens found that Norplant retention rates were 71% at one year and 62% at two years, with a history of induced abortion predicting higher continuation.

This research investigated how moisture absorption impacts human hair structure, finding that moisture sorption kinetics reveal insights into chain entanglement and structural changes due to cosmetic treatments, while also quantifying the influence of sample weight and fiber density on the sorption process.

This article discusses how challenges in drug development and success rates are driving a shift in the pharmaceutical industry towards engineering targeted drug delivery systems, with nanomaterials offering potential solutions for selective therapeutic delivery.

This article suggests that most topical treatments for acne and unwanted hair growth are safe to use during pregnancy, except for hydroquinone and tretinoin, due to low systemic absorption.