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In this study, despite morphological differences in the hair growth cycle stages, the lipid composition of the epidermis and dermis showed no significant variation, though water content and cholesterol levels differed between these skin layers.

The study observed that Carthamus tinctorius extract-loaded lipid carriers promoted hair growth in C57BL/6 mice more effectively than minoxidil, although further research on humans is needed for confirmation.

This review discusses the potential of nanostructured lipid carriers to improve herbal treatments for alopecia and reports no new clinical results, highlighting the need for further clinical trials and safety data.

This study found that nanostructured lipid carriers containing tea seed or lavender oil improved hair regrowth in female Wistar rats over 30 days, showing greater effectiveness compared to a commercial product and placebo, attributed to enhanced follicular penetration and stability.

In this study, researchers reported that topical nanostructured lipid carriers containing tea seed or lavender oil significantly enhanced hair regrowth in female Wistar albino rats over 30 days compared to placebo, with increased hair length and follicular density observed.

This study in female Wistar albino rats found that Pluronic F127-stabilized nanostructured lipid carriers with tea seed or lavender oil significantly increased hair regrowth and follicular density compared to placebo, showing enhanced efficacy over a commercial product in promoting hair growth.

In this study, researchers developed topical tofacitinib-loaded cationic lipid nanoparticles, which improved absorption and targeted hair follicles in an ex vivo pig ear model, showing promise in treating alopecia areata by reducing symptoms through the JAK/STAT pathway.

This study found that the optimized nanostructured lipid carrier formulation effectively enabled caffeine to penetrate and accumulate in hair follicles, suggesting potential for intrafollicular delivery in treatments for hair loss.

This study developed a nanostructured lipid carrier for 17-α-estradiol that showed stable physicochemical properties and improved targeting to hair follicles in alopecia treatment.

This study suggests that using nanostructured lipid carriers may improve the targeting of 17-α-estradiol in treating alopecia by improving skin penetration and stability.

Safflower extract in nanostructured carriers was more effective than minoxidil for hair growth without irritating skin.

In this study, researchers found that higher concentrations of internal lipids in African hair may influence its keratin structure, as observed through various analytical methods.

This study found that chemical treatments like perming, dyeing, and bleaching significantly alter amino acids and lipids in human hair, which may impact hair strength and quality.

In this study, extracting internal lipids from Caucasian hair fibers led to decreased water permeability, influenced by the fluidity of lipids.

This study found that white hair fibers have lower lipid content and different water absorption dynamics compared to brown hair fibers, suggesting differences in their barrier functions.

This article is a letter to the editor discussing lipid distribution and its influence on hair structure and does not present any new research findings.

In this study, researchers identified significant differences in lipid composition between grey and black hair follicles in women with type 2 diabetes and healthy controls, suggesting these lipids may contribute to the production of grey hair and may offer targets for anti-grey-hair treatments.

This study identified key lipid differences between black and white hair in individuals with premature greying, highlighting vitamin D3 as a potential target for further research in understanding this condition.

In this study, lipid metabolism was found to be reduced in scalp tissues of patients with androgenetic alopecia, and lipid supplementation enhanced hair growth-related gene expression in human dermal papilla cells, suggesting a potential role for lipids in promoting hair growth through HIF-1 signaling.

This study found that lipid supplementation can enhance hair growth by promoting trichogenic gene expression and proliferation of human dermal papilla cells, suggesting lipids as a potential therapeutic target for treating hair loss through HIF-1 signaling pathways.

This study found that hair membrane fluidity is low in the cuticle but high in the cortex and medulla, with treatments like ionic surfactants and oleic acid increasing fluidity in hydrated hair; however, dehydration significantly reduces fluidity throughout the hair.

This research reported that squarticles, nanoparticles made from sebum-derived lipids, enhanced the follicular delivery and skin accumulation of diphencyprone and minoxidil, indicating effective drug deposition with reduced systemic absorption in alopecia treatment.

In this study, lipid peroxides were found to induce apoptosis in hair follicle cells and advance the catagen phase in mice, suggesting a potential mechanism for alopecia development.

This study found that a nutritional supplement containing peptides, lipids, hyaluronic acid, and collagen improved skin, hair, and nail dryness, with significant benefits noted for those with severe symptoms.

This study explored the effects of USPlus® DERM, a bioactive fatty acid extract from Serenoa repens, in promoting hair growth and enhancing hair follicle stem cell stemness in an ex vivo setting, showing potential for both 5‐α reductase-dependent and independent hair loss treatments.

In this study, researchers found that the concentrations of cetostearyl alcohol, shea butter, and coconut oil significantly affected the in vitro spreadability of heat protectants, suggesting that optimizing these components could improve product coverage and thermal protection on hair.

This study found that a wheat polar lipid complex supplement significantly reduced hair loss and improved hair growth and volume in women experiencing acute hair shedding, including postmenopausal women.

This study evaluated the effectiveness and safety of a cinchonine nanostructured lipid carrier serum for hair growth in mouse models, finding that it significantly increased hair length and enhanced follicle penetration compared to controls, with no notable irritation observed.

In this study, researchers observed that phospholipid-calcium carbonate hybrid nanoparticles effectively delivered Tofacitinib citrate topically, which significantly inhibited hair follicle apoptosis and promoted hair growth in a mouse model of chemotherapy-induced alopecia, compared to a traditional Tofacitinib solution.

This study observed that male and female epidermis differ significantly in total lipid and phospholipid levels during different stages of the hair growth cycle.