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This study found that oregonin, isolated from Alnus japonica, demonstrated strong antioxidant activity and apoptosis modulation in hair follicle cells, suggesting its potential as a natural ingredient for preventing hair loss in cosmetic products.

This study found that oregonin isolated from Alnus japonica exhibits strong antioxidant activity and may promote hair growth, suggesting its potential use in cosmetic products.

This study investigated the effects of the 60% alcohol extract from Alnus sibirica and its active compound, oregonin, on hair health, observing anti-oxidative and anti-apoptotic benefits in human hair dermal papilla cells exposed to oxidative stress, suggesting potential as natural materials for hair loss prevention.

This study found that combining MSM with MAP significantly enhanced hair growth in mice, comparable to or better than minoxidil, due to increased intradermal retention of MAP.

This study assessed the dermatologic potential of western red cedar, white spruce, birch, balsam poplar, and black spruce used in First Nations medicine, highlighting several active compounds relevant to dermatology, but noted a lack of high-quality evidence in existing research.

This review summarizes the biological process of melanogenesis and evaluates natural skin-whitening treatments based on their mechanisms affecting melanin production, aiming to inform on the effects and awareness of skin-bleaching creams.

This study found that D'orenone blocks root hair growth by increasing PIN2 protein abundance, leading to reduced auxin concentration, but external auxin can reverse these effects.

This study found that topical γ‐Oryzanol significantly stimulated sebaceous gland cell activity and sebum production in rats.

In this study, introducing the rat OTC gene into spf-ash mice led to increased OTC activity and normalized hair growth and biochemical markers like urinary orotic acid and serum citrulline, partially correcting the symptoms of OTC deficiency.

This review discusses the diverse functions and therapeutic potential of ectopic olfactory receptors throughout the body, emphasizing their roles in various cellular processes and potential in cancer detection and therapy, but reports no new clinical results.

This study found that ornithine decarboxylase (ODC) may play a significant role in regulating human hair growth and hair cycle changes, as inhibiting ODC reduced follicular keratinocyte proliferation and human hair growth.

This study found that ornithine decarboxylase expression is linked to cell proliferation and differentiation in hair follicle development and growth.

This study discovered that a specific G to C mutation in the ornithine aminotransferase gene is linked to the retarded hair growth phenotype in mice and may serve as a model for human gyrate atrophy.

In this study, Origanum vulgare extracts showed antioxidant activity and increased insulin-like growth factor-1 expression without causing cytotoxicity in human hair dermal papilla cells.

This study found that androgens increase Odc1 expression in skeletal muscle myoblasts, promoting proliferation and delaying differentiation.

This study found that overexpression of a mutated ornithine decarboxylase transgene in mice led to complete hair loss, which could be prevented or reversed with an ODC inhibitor.

In this study, oleogels containing rosemary oil significantly enhanced hair growth in albino rats, showing similar effects to 2% minoxidil after six weeks.

In this study, researchers characterized the retinal structure and function of the Oat^rhg mouse model of gyrate atrophy, finding localized atrophy without significant retina-wide functional impact, suggesting the model may be useful for testing new treatments using multimodal retinal imaging.

In this study, researchers found that RORA directly regulates the expression of the Bnip3 gene, which is crucial for hair follicle stem cell health, using rat HFSCs as a model. They propose that targeting RORA could modulate HFSC status.

This study observed that the OCIAD2 and DCN genes in Liaoning cashmere goats have opposite effects on hair growth by interacting with the TGF-β signaling pathway, influencing follicle morphogenesis and periodic changes.

This study found that melatonin may enhance hair follicle stem cell viability by downregulating the nuclear receptor RORA, which otherwise inhibits cell proliferation and promotes apoptosis.

This study observed that a combination of rosemary and castor oils promoted hair growth in a mouse model, showing similar hair length trends to 2% minoxidil. However, results from this murine model cannot be directly applied to humans.

Oxytocin from hair cells helps hair growth and stem cell increase.

This study suggests that EREG, released from ORS cells, may promote hair growth by activating specific receptors and modulating ROS generation, offering a potential new treatment for hair loss.

This study found that introducing the recombinant rat OTC gene into SPF-ASH mice restored normal hair growth and metabolic function, improving symptoms associated with OTC deficiency.

This study found that stimulating the olfactory receptor OR2AT4 in human hair follicles with a synthetic sandalwood odorant promotes hair growth ex vivo by decreasing apoptosis and increasing IGF-1 production.

This study suggests that RORα, RORβ, and RORγ mRNA expression in cashmere goat skin is related to different stages of hair follicle development, indicating a possible role in cycled cashmere growth.

This study found that oxyresveratrol enhanced cell proliferation, reduced oxidative stress and inflammation in vitro, and promoted hair growth in an androgenetic alopecia mouse model, suggesting its potential as a treatment for hair loss.

This study suggests melatonin may promote cashmere growth in Inner Mongolian cashmere goats through the nuclear receptor RORα, with a noted mRNA expression difference in December compared to other months.