December 2024 in “Revista Brasileira de Plantas Medicinais” This study reviewed in vivo studies and clinical trials on phenolic compounds, like tannins and flavonoids, for treating hair loss, noting their antioxidant and anti-inflammatory effects but highlighting the need for more clinical trials to confirm benefits.
In a study on hair loss treatment, researchers found that a serum containing Cinchona succirubra extract and caffeine improved hair density and reduced hair loss in individuals with acute telogen effluvium after 16 weeks of use, with significant improvements observable after just 4 weeks.
8 citations
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January 2011 in “Organic and Biomolecular Chemistry” Minoxidil reacts to nitrosation 7 times more than phenol, mainly due to its -NH₂ groups, leading to the creation of N-nitrosominoxidil.
February 2026 in “World Journal of Interdisciplinary Innovation Sciences” This systematic review found that cinnamon supplementation may modestly improve insulin sensitivity and potentially reduce hyperandrogenism in women with PCOS, but stresses the need for large-scale clinical trials.
3 citations
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June 2024 in “Pharmacia” In this study, isatin-gallate hybrids were synthesized and assessed, with compound 3b showing significant in vitro antioxidant and cytotoxic activities, and the series displaying moderate efficacy in inhibiting coronavirus activity through in silico analysis.
19 citations
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January 2007 in “Biological & pharmaceutical bulletin” This study found that glycine treatment inhibited melanogenesis in B16F0 melanoma cells and reduced melanin content in C57BL/6J mice by down-regulating tyrosinase protein levels.
August 2023 in “Innovare journal of Ayurvedic sciences” In this in vitro study, methanolic extracts of Mangifera indica and Hibiscus rosa-sinensis demonstrated significant inhibitory activity on α-amylase and α-glucosidase enzymes, suggesting their potential usefulness in diabetes management due to their comparable effects to the standard drug acarbose.
January 2003 in “Dialnet (Universidad de la Rioja)” This study isolated highly pure oleanolic and maslinic acids from olive milling residues, exploring their chemical reactions, including the formation of finasteride precursors.
2 citations
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June 2025 in “International Journal of Molecular Sciences” In this study, Carthamus caeruleus root juice exhibited in vitro anti-inflammatory effects by stabilizing human erythrocyte membranes and inhibiting albumin denaturation, as well as showing potential inhibition of COX-2 through in silico analysis; however, further research is needed to confirm efficacy and mechanisms.
46 citations
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November 1963 in “Journal of Histochemistry & Cytochemistry” In this study, researchers localized arginine and citrulline in rat hair follicles and found that arginine is abundant in trichohyalin droplets, while citrulline predominantly accumulates in the hardened inner sheath and medulla.
January 2025 in “Archives of Dermatological Research” This research observed that Moracin M, a compound from the Moraceae family, significantly promotes hair growth and angiogenesis via the Wnt signaling pathway in human dermal papilla cells, offering a promising alternative to current hair growth treatments like minoxidil.
March 2023 in “Asian Journal of Beauty and Cosmetology” This study found that the herbal extract HX109 promoted hair growth in mice by increasing cell viability and enhancing hair regrowth, with the effects increasing as doses rose.
February 2026 in “Materials” This study evaluated Humulus lupulus (hops) extract in cosmetic formulations and found it to maintain antioxidant and anti-irritant properties, reducing erythema by 10% after three weeks of use, supporting its potential for skin health improvement in plant-based cosmetics.
11 citations
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January 2017 in “Oxidative medicine and cellular longevity” This study found that antroquinonol inhibited CD8+ T cell proliferation and reduced proinflammatory cytokine secretion in vitro, while also ameliorating H2O2-induced depigmentation and resisting reductions in hair follicle length, skin thickness, and tyrosinase expression in mice.
61 citations
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January 2018 in “Cosmetics” This review highlights the potential of coffee silverskin's bioactive compounds in combating skin aging and related conditions, suggesting it as a promising natural ingredient for cosmetics due to its antioxidant, anti-inflammatory, and anti-aging properties.
8 citations
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March 2002 in “Archiv Der Pharmazie” In this study, 4-(4-(phenylaminocarbonyl)benzoyl) benzoic acid exhibited the strongest inhibitory activity against the human type 2 steroid 5α-reductase isozyme among the compounds tested.
August 2026 in “Clinical Cosmetic and Investigational Dermatology” This study found that Hydroxypinacolone Retinoate (HPR) may alleviate UV-induced skin photoaging by enhancing collagen synthesis, reducing degradation, and modulating inflammatory and oxidative responses in a dose-dependent manner.
December 2025 in “Universal library of medical and health sciences.” This study analyzes contemporary theories and practices to understand key factors influencing the development of the examined phenomenon, proposing trends and practical applications for researchers and practitioners, while acknowledging study limitations and suggesting future research directions.
4 citations
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October 2017 in “Indian drugs” This study isolated and characterized several chemical compounds from the leaves and flowers of Hibiscus rosa-sinensis, using spectral data and chemical reactions for structure elucidation.
October 2023 in “Arab Gulf journal of scientific research” This study found that adding Cinnamomum zeylanicum bark extract to a powder shampoo formulation significantly improved antioxidant activity without affecting its cleansing ability, although its clinical effectiveness remains to be tested.
14 citations
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July 2017 in “Fitoterapia” In this study, oleanolic acid was found to enhance hair follicle growth and promote hair matrix cell proliferation via the Wnt/β-catenin pathway in a human hair follicle organ culture model.
May 2023 in “Jurnal farmasi sains dan praktis” In this research on cinnamon and virgin coconut oil hair tonics, F2 and F3 demonstrated stable physical properties and mild irritation potential, while formula 1 remained non-irritating but less stable regarding pH and viscosity.
December 2022 in “Journal of Natural Remedies” 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.
January 2005 in “Вестник Оренбургского государственного университета” This study found that minoxidil combined with all-trans retinoic acid additively promoted hair growth in vitro by enhancing cell survival and reducing apoptosis compared to minoxidil alone.
87 citations
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March 2000 in “American Journal of Clinical Dermatology” Alpha-hydroxy acids, like glycolic acid, safely improve skin issues and work on all skin types.
January 2024 in “Bratislavské lekárske listy/Bratislava medical journal” This study examined the vasorelaxant effects of two similar alkaloids, chloroquine and cinchonine, in a model of smooth muscle contractions induced by phenylephrine. Results are not reported in the abstract.
17 citations
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July 2019 in “Majalah Obat Tradisional” This study found that tannin effectively inhibits and degrades mono-species and polymicrobial biofilms, making it a potential candidate for antibiofilm treatments.
4 citations
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April 2018 in “Journal of Investigative Dermatology” This study suggests that hydroxypinacolone retinoate (HPR) may be an effective alternative to tretinoin for anti-aging skin treatments, offering similar collagen production benefits without increased skin irritation.
1 citations
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July 2022 in “Journal of dermatology” This study found that in vivo and in vitro, citric acid metabolism through the CS-CA axis suppressed hair growth and induced inflammation and cell apoptosis in hair follicles, suggesting it as a potential therapeutic target.
January 2013 in “Transactions of the Materials Research Society of Japan” In this study, carboxymethylalanyl disulfide keratin was shown to effectively prevent hair damage during repeated bleaching and permanent waving treatments.