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This review discusses the use of nanomaterials in cosmetics, highlighting their benefits like enhanced stability and skin penetration, while also noting potential health risks and the role of natural ingredients in formulations.

This study found that shallot extract may promote hair growth in androgenetic alopecia by reducing inflammation and modulating gene expression related to key hair growth pathways.

This study reported that phytochemicals SA-4 and SA-6 from Tridax procumbens exhibited a dose-related immunostimulatory effect on mice, suggesting their potential as immunostimulators.

This study found that Acanthus ebracteatus extract and verbascoside induced dermal papilla cell proliferation and reduced inflammatory cytokine release in vitro, suggesting potential for anti-hair loss applications.

This study found that Datura metel extracts obtained through supercritical CO2 extraction demonstrated significant biological activity, including antioxidant and anti-inflammatory properties, and effectively promoted wound closure and collagen preservation, comparable to standard treatments, in laboratory experiments.

This article reviews treatment options for androgenetic alopecia, highlighting potential uses of plant materials, but reports no new clinical results.

This review discusses the causes of alopecia, including androgenetic alopecia, and potential active ingredients for hair regrowth, but it does not report new clinical results.

This study found that treating hair with a 1% cotton honeydew extract improves smoothness and reduces chipping compared to untreated hair, confirmed by clinical and SEM evaluations.

This study concluded that extracts from fermented pumpkin peel and pulp, processed with Lactobacillus strains and kombucha, may serve as multifunctional cosmetic ingredients, offering antioxidant protection, anti-aging, and skin regeneration benefits by demonstrating cytoprotective effects and reducing inflammatory cytokines in cell assays.

This randomized controlled trial found that consuming *Gynostemma pentaphyllum* extract significantly improved hair elasticity, density, and diameter over 24 weeks without severe adverse events, suggesting it as a safe functional food ingredient for hair health improvement.

This study found that hair tonics with 5% and 10% licorice extract promoted hair growth in rabbits similarly to 2% minoxidil and were generally safe, although they caused mild eye irritation at the 2.5% concentration.

This study found that while the EtOAc fraction of Centella asiatica had the highest antioxidant activity, it was toxic to human follicle dermal papilla cells, but the EtOH crude extract promoted hair growth by enhancing VEGF expression.

This study found that a formulated polyherbal antidandruff hair oil containing eucalyptus and ocimum volatile oils, along with hibiscus and phyllanthus extracts, showed both antifungal and hair growth activities in open pilot clinical trials.

This review suggests that herbal hair serums, which are claimed to nourish the scalp and promote hair growth, may effectively treat alopecia without adverse effects, offering a natural alternative to allopathic medications that often have side effects.

This study reported that rice bran oil from the Thai rice variety BB4CMU showed potential in promoting melanin production and inhibiting steroid 5α-reductase, suggesting a natural option for hair revitalization.

This study reports that Edelweiss extract significantly prolonged the anagen phase and increased hair density, suggesting potential as an anti-hair loss treatment.

This study found that alcoholic extracts of Blumea eriantha DC exhibited significant hair growth activity, primarily attributed to the phytoconstituent Dimethyl sulfone.

This review highlights various alternative and complementary treatments for androgenic alopecia, noting that while only two FDA-approved options exist, increased awareness among dermatologists of supportive evidence for other therapies may better inform patient education.

This study suggests that while complementary and alternative treatments for hair loss are becoming more popular, their effectiveness and mechanisms remain largely unverified.

In this study, onion (Allium cepa) extracts promoted hair growth in an alopecia model in mice, with the effect appearing unrelated to the presence of the polyphenol quercetin.

In this study, a botanical extract and minoxidil showed similar effects in vitro by reducing pro-inflammatory cytokines and 5α-reductase expression while increasing growth factors VEGF and KGF in human keratinocyte cells, suggesting potential for further in vivo research.

This study developed and tested a polyherbal anti-dandruff hair serum using natural ingredients with antifungal, anti-inflammatory, and conditioning properties, reporting notable antifungal efficacy, good stability, and satisfactory physicochemical characteristics, suggesting the serum is a safe and effective natural alternative for daily dandruff treatment.

In this laboratory study, researchers developed a multifunctional organic hair cream with various natural extracts, finding that the cream with 15% extracts demonstrated higher physical stability, hair strength, and antimicrobial activity compared to lower concentration samples and synthetic alternatives.

This review suggests that standardized herbal shampoos may offer a safe and sustainable alternative to synthetic products due to their natural saponins and multifunctional benefits, though challenges in consistency and shelf-life persist.

This study demonstrated that Periplaneta americana extract significantly promoted hair regeneration in depilated mice by enhancing superoxide dismutase activity, upregulating vascular endothelial growth factor, modulating the FOXO/PI3K/AKT pathway, and restoring skin microbiome balance, suggesting its potential as a novel therapeutic candidate for alopecia.

In this study, researchers reported that standardized rosemary and capsicum extracts significantly improved hair growth parameters such as follicle density, length, and diameter in rats with testosterone-induced alopecia, suggesting these extracts may aid in more effective natural treatments for androgenetic alopecia.

This study evaluated cucumber extract shampoos and found they meet physical quality standards and exhibit strong antifungal activity against Candida albicans fungi, with efficacy increasing with higher concentrations of cucumber extract.

In this study on Wistar rats, ginger and celery extracts at the tested dosage did not significantly affect hair growth onset, duration, or regrowth, nor did they cause significant inflammation, despite the presence of bioactive phytochemicals in the extracts.

This review explored the causes of hair graying and evaluated how plant-derived extracts and phytochemicals might alleviate it, noting that certain compounds showed potential in enhancing melanocyte function, reducing oxidative stress, and influencing stress-related pathways based on experimental evidence.

This study reported that peanut callus extract, rich in resveratrol, significantly stimulated hair growth and reduced hair loss in an in vitro model and a clinical trial, showing promise as a cosmetic bioactive ingredient.