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Hair removal methods damage the skin barrier and affect substance penetration.

The study reported that reducing finasteride particle size significantly improved its cellular permeation through prostate epithelial cells, though it had a lesser impact on systemic pharmacokinetics and tissue distribution in rats.

This study developed a reliable HPLC-UV/Vis method to determine aluminum phthalocyanine chloride in skin, supporting its use in skin permeation studies for photodynamic therapy of cutaneous tumors.

This report describes two prepubertal children with autoimmune gastritis, highlighting the need to screen paediatric patients with organ-specific autoimmune diseases for co-existing conditions.

This study found that spanlastic gel loaded with thymoquinone and ascorbic acid improved skin deposition and tyrosinase inhibition, suggesting potential as a treatment for hyperpigmentation.

This study demonstrated that a flow injection method using potassium permanganate for detecting minoxidil provided accurate recoveries and agreed closely with HPLC results, showing potential for effective analysis of commercial samples.

This study demonstrates that a bioinspired peptide, PepACS, can efficiently and safely perm hair by interacting with keratin's sulfhydryl group without compromising tensile strength, and it shows potential for hair repair and dyeing applications in the hair care industry.

This case report highlights a rare instance of permanent hair loss caused by an allergic reaction to a mesotherapy mixture containing triamcinolone acetonide, suggesting that hypersensitivity reactions to such mixtures are possible.

This review reported that while glycyl-L-histidyl-L-lysine tripeptide copper complex (GHK–Cu) has limited skin permeation when used alone, liposomes may enhance its absorption, but there is limited research on this aspect, highlighting a need for further studies.

This study found that host cells play a crucial role in the maturation of reconstructed hair follicles, emphasizing their participation in hair follicle reconstruction processes.

This chapter reviews the hair follicle's role in drug and chemical penetration through the skin but does not present new experimental findings.

This study found that straight permed hair retains more weight than virgin hair during burning at higher temperatures, with distinct differences in morphological changes observed through thermal analysis and microscopy.

In this study, the novel thiol-Michael click perming molecule, MA2-CySS, achieved repeatable perming with reduced oxidative damage, preserving hair keratin's structure while maintaining efficiency comparable to traditional oxidative methods.

This study found that applying a hair mist with dandelion extract before heat perming improved wave efficiency, tensile strength, and hair cuticle condition compared to a base mist or no pretreatment, demonstrating the extract's protective effects against heat damage.

This study compared the effects of direct heat perms and softening heat perms on hair, analyzing damage and morphological changes to understand their impact on hair fibers and provide foundational data for future research.

This study found that using a hair-hardener improved hair thickness, amino acid content, surface condition, tensile strength, and wave efficiency without causing any allergic reactions in participants.

In this study, liposome-encapsulated thioglycolic acid improved hair perming by enhancing the penetration of perm solutions, resulting in a stronger S-shaped wave and higher cysteine content compared to the control.

This study developed and tested a shampoo with semi-permanent dyes designed to gradually cover gray hair, reporting maintained stability and effective gray–black coloration on high-canities hair tresses through eight wash cycles.

In this study, cetirizine hydrochloride was formulated into niosomal and cubosomal gels, showing potential for off-label use in treating androgenic alopecia due to effective skin permeation and acceptable safety profiles; cubosomal gels exhibited superior permeation compared to niosomal gels.

This study developed dutasteride-loaded microneedle systems using a specific polymer to enhance transdermal delivery, demonstrating efficient drug release and increased accumulation in hair follicles, thus supporting their potential for treating androgenic alopecia.

In this study, researchers found that the lipid composition in hair significantly affects water diffusion and may explain differences in dyeing and cosmetic treatment responses between Asian and European hair, with CP2 fibers having more lipids than CP3 fibers.

This study reported that fermented grapeseed oil may enhance hair permeability and improve strength and color retention in chemically treated hair compared to regular grapeseed or silicone oils.

This study found that using 1,4-butylenediamine bismaleimide for hair perming through thiol-Michael click chemistry offers comparable efficiency to conventional oxidative methods, with enhanced durability and reduced damage to hair fibres, preserving mechanical, color, and surface properties.

This study evaluated enhancers to improve skin absorption of topical cetirizine for androgenic alopecia treatment and found eucalyptus and Tween 80 most effective, while propylene glycol had the weakest effect.

This review discusses the potential benefits of using natural permeation enhancers to improve transdermal drug penetration in formulations like emulgel, a promising topical delivery system for hydrophobic drugs.

In this in silico study, researchers found that the hair follicle's contribution to dermal permeability of small molecules varies with the lipophilic and hydrophilic properties of substances, highlighting the need for careful characterization of substances filling the follicular route when interpreting experimental permeability data.

In this article, researchers explored the potential of lipidic nanocarriers to enhance the delivery and effectiveness of finasteride in a topical gel form for androgenic alopecia, aiming to improve treatment options and reduce systemic adverse effects.

This study observed that using an environmentally friendly bovine milk permeate effectively and cleanly removes wool from sheepskins without harming the skin, and results in smoother leather compared to traditional chemical methods.

This study found that combining lecithin reverse wormlike micelles with isopropyl myristate enhanced the skin permeability of a model hydrophilic drug, facilitated by interactions with sebum in hair follicles.

In this study, researchers developed a novel gel formulation combining zinc oxide nanoparticles and finasteride-loaded nanostructured lipid carriers, which showed promising results for topical delivery and effective skin penetration, potentially offering a new treatment approach for androgenic alopecia.