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In this study involving mice on a high-fat diet, piperine from black pepper was observed to reduce sebaceous gland size and fat accumulation, suggesting its potential in controlling hair oiliness by inhibiting adipogenesis in hair stem cells.

In this study, the researchers found that using dragon fruit peel extract in a gray hair dye formulation, along with specific adjuvants, produced a dark black color on gray hair, demonstrating its potential as a natural colorant alternative to synthetic dyes.

This study found that Piper nigrum leaf extract showed in vivo anti-androgenic activity and potent 5α-reductase inhibitory effects, with piperine and (−)-cubebin identified as active components.

In this study, researchers found that cosmetic formulations containing guaraná extract effectively controlled oiliness in oily skin and hair by reducing sebaceous gland activity and lipid content without compromising skin barrier function, making them promising for managing excessive sebum production.

This study found that a high-sesquiterpene extract from Curcuma aeruginosa slowed axillary hair growth in women by 22% compared to placebo over 12 weeks, with results delayed by 6 weeks, and participants reported satisfaction without adverse effects.

This study found that a 15% Pisum sativum extract concentration in hair tonic showed the most effective hair growth, with a length of 14.51mm and weight of 0.16g.

This study tested a natural hair dye made from papaya seed extract, celery leaf, and avocado, finding color change in animal hair but also noting tissue changes like hyperkeratosis.

In this study, a new emulsion containing CBD and ginger root extract significantly reduced symptoms of dry and eczema-prone skin, such as erythema and itching, in a clinical trial.

In this study, mangosteen pericarp water extract was found to significantly promote hair dermal papilla cell proliferation and enhance melanin synthesis in vitro, surpassing known melanogenic agents such as α-melanocyte stimulating hormone and forskolin in potency.

This study found that extracts from Cirsium japonicum var. spinossimum seeds are rich in polyphenols and flavonoids, demonstrating significant anti-inflammatory and cell proliferation effects in specific cell models, suggesting potential as a source for anti-inflammatory and anticancer agents.

This study concluded that a hair-nourishing formulation combining virgin coconut oil and 4% chilli oil significantly enhanced hair growth in white rats over a 21-day period, while also exhibiting good physical stability under varying storage conditions.

In a cell-free test setting, this study found that a novel saw palmetto extract effectively inhibited the 5α-reductase type II enzyme, showing promising bioactivity comparable to finasteride for promoting prostate health.

This review discusses various natural extracts, such as peppermint, rosemary, wild cultivated ginseng, and others, for their potential hair growth promotion effects and calls for further exploration into combinations with fewer side effects.

This study found that a novel saw palmetto supercritical CO2 extract effectively inhibits 5α-reductase type II in vitro, suggesting its potential for promoting prostate health in benign prostatic hyperplasia.

This study found that coffee berry extract demonstrated anti-aging properties in skin and hair cells, showing significant anti-collagenase activity and stimulating hair-related gene expression, suggesting its potential for use in cosmeceuticals.

This study found that Kaempferia galanga ethanolic extract has potential as an antifungal agent in an oil-in-water cream formulation, exhibiting stable physicochemical properties in laboratory tests.

This article reviews the cultural history and changing scientific perceptions of peppercorn as a "numbing spice," focusing on its historical, medical, and literary significance, but provides no new research findings.

This study found that a phytosomal delivery system improved the bioavailability of Cuscuta reflexa extract compared to the plain extract, suggesting enhanced potential for this formulation.

This study aimed to formulate and evaluate a herbal gel containing Allium cepa extract for its physical properties, such as appearance, viscosity, and spreadability, but it does not report specific results or effectiveness in preventing hair loss.

This study found that an aqueous extract of Phyllanthus emblica, primarily containing gallic acid, can activate hair growth gene expression and is effectively delivered to hair follicles using transfersomes.

This study examined how varying concentrations of kaolin base in mud masks with red pomegranate peel extract influenced properties like viscosity, pH, and drying time, finding that a formulation with 22.5% kaolin performed best in terms of physical characteristics and enzyme inhibition.

In this study, mangosteen pericarp extract was found to promote hair dermal papilla cell proliferation and enhance melanin synthesis, suggesting its potential as an ingredient in hair growth and tanning products.

In a study using a mouse model, Cerasus serrulata flower extracts significantly increased β-catenin and VEGF expression, promoting hair blackening and suggesting potential as a treatment for premature greying.

This study found that compounds extracted from Cucurbita maxima seeds at 50 °C for 2 hours demonstrated significant binding affinities against breast cancer-related proteins, suggesting potential anticancer activity needing further in vitro and in vivo evaluation.

This study found that a pet ether extract of Daucus carota promoted hair growth by inducing and prolonging the anagen phase in albino rats, surpassing the effects of 1% minoxidil.

In this clinical study, a serum containing Cinchona succirubra extract and Caffeine significantly improved hair growth and reduced hair loss in subjects with acute telogen effluvium.

This study evaluated a 20% cinchona extract cream and found it increased hair growth length and mass in guinea pigs, demonstrated good physical stability, and did not irritate rabbit skin.

This study found that Hibiscus rosa-sinensis dried leaves extract displayed the strongest pancreatic lipase inhibitory activity among 37 tested plant extracts, showing potential as an anti-obesity agent with effects comparable to the pharmaceutical drug orlistat in reducing plasma triacylglycerol levels in rats.

This study found that ex vivo, the skin permeability of caffeine increased with formulations using natural caffeine from coffee extract, particularly when combined with 2.5% Transcutol P, compared to synthetic caffeine formulations.

This study found that a nano-cubosome formulation co-loaded with capsaicin and thiocolchicoside enhanced bioavailability and showed promising analgesic and anti-inflammatory effects in rats, potentially benefiting gout management through improved transdermal delivery.