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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 observed that in Japanese females, hair lipid composition showed significant correlations, suggesting CH and CERs may act as a barrier against sebum-derived lipids.

This study found that metabolic syndrome is more common in individuals with androgenic alopecia compared to those without, and that free androgen index could help identify those with the syndrome.

In this study, PGD2 was shown to increase testosterone production in human keratinocytes through reactive oxygen species, suggesting potential benefits of antioxidants like N-acetyl-cysteine for AGA patients.

This review discusses the roles of dermal white adipose tissue (dWAT) as an insulator, antibiotic, and regenerative tissue, highlighting its importance in systemic metabolism and immune function, but reports no new clinical results.

This study found that while ethnic hair types share a common fibrous keratin structure, variations in keratin-associated proteins and lipids may lead to different macroscopic hair characteristics.

This review identifies genetic mutations associated with congenital hair loss disorders in Japanese populations, particularly highlighting common LIPH gene mutations linked to woolly hair/hypotrichosis, and reports no new clinical results.

This study found that both ethanol and aqueous extracts of Lepidium sativum seeds improved insulin signaling and reduced obesity-related metabolic changes in high-fat diet-fed rats, suggesting potential as a dietary supplement.

The researchers reported that components of keratinocytes influence the formation and differentiation of the stratum corneum, the epidermis's most specialized layer.

This review suggests that multifunctional cosmetic systems, particularly HIVEN Curl Code ®, may help control frizz and maintain curl definition in highly curly hair by utilizing various conditioning and biofunctional ingredients.

This narrative review describes the components of human hair and their nutritional importance but reports no clinical results; the authors suggest dietary sulfur amino acids are essential for hair health.

This review discusses the effects of dietary protein and its components on cholesterol, essential fatty acids, and possible health consequences, but presents no new clinical findings.

This review discusses how lipid signalling molecules are generated in plants and their role in responding to environmental stress, but it reports no new clinical results.

This study suggests that fish oil, specifically its components EPA and DHA, play a beneficial role in promoting skin health by supporting epidermal growth and reducing proinflammatory cytokines.

This study found that topical application of bovine milk polar lipids accelerated hair cycle progression in mice, showing potential for use in cosmetic products.

This article examines the role and composition of integral hair lipids in forming a protective barrier similar to the skin's epidermal lipid layer and reports no new findings about their effects.

This review explored the chemical makeup and pharmacological effects of Lindera aggregata, identifying 349 components including sesquiterpenoids, flavonoids, and alkaloids, with various potential benefits demonstrated in vitro and in vivo, such as anti-inflammatory and antioxidant effects.

This study reported that invasomes, utilizing limonene as a component, enhanced the transdermal permeation of finasteride by over 21 times, indicating their potential as a novel drug delivery system.

This study found that adapalene-loaded solid lipid microparticles may enhance targeted drug delivery into sebum due to their similarity to sebum components, although both this formulation and a standard cream showed equivalent follicular penetration.

In this study, APC collagen peptides were observed to enhance hair elasticity and gloss in human hair follicles by increasing amino acid and lipid component levels, suggesting their potential benefits for improving hair qualities.

In this study, microneedles combined with finasteride nanostructured lipid carriers (FIN-NLC-MNs) were found to enhance skin penetration and specifically target hair follicles, promoting hair growth and gene regulation in androgenetic alopecia.

This study found that the medulla of Japanese hair contains unsaturated lipids such as squalene and oleic acid, which may contribute to hair glossiness.

This study aimed to enhance the skin penetration of brown algae fucoidan using a Nanostructured Lipid Carrier, achieving a formulation with good physical quality and stability.

In this animal study, mice on a high-fat diet experienced weakened hair follicles but regained hair growth after treatment with wood sterol, which improved hair follicle health and altered hormone levels, suggesting its potential as a preventive measure for diet-induced alopecia.

This study suggests that caveolin-1 may be a potential target for treating psoriasis, as its downregulation was linked to psoriasis markers that improved with soluble caveolin scaffolding domain peptide treatment.

This study identified that the enzyme CYP2B12 is skin-specific and likely plays a role in the metabolism of arachidonic acid, a key component in lipid signaling within sebaceous glands.

In this study, UVB exposure was found to alter certain chemical properties of the hair shaft, such as keratin components and water content, without significantly affecting its physical morphology.

This study found that lipids extracted from Schizochytrium sp. significantly enhanced the proliferation and survival of dermal papilla cells under oxidative stress, reduced reactive oxygen species, inhibited ferroptosis, and promoted antioxidant genes, which improved hair growth in experimental settings, suggesting a potential treatment for alopecia.

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 review highlights the potential of egg components, such as eggshell and egg yolk, in biomedical applications like tissue engineering and drug delivery but notes existing research gaps in this emerging field.