December 2000 in “Kirk-Othmer Encyclopedia of Chemical Technology” This paper reviews various aspects of hair care products, including formulations, regulations, categories, and safety, without reporting new clinical findings.
December 2024 in “International Journal of Advanced Research in Science Communication and Technology” In this study, researchers prepared a herbal hair tonic using virgin coconut oil and nine herbs, evaluating its antibacterial, antifungal activities, and benefits for hair strength, with variations in ingredient concentrations and analyses for consistency and appearance.
September 2019 in “University of the Arts London Research Online (University of the Arts London)” This study tested the effects of protective pre-treatments on African hair and found that these treatments, combined with moderate grooming, may help maintain cuticle integrity.
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July 2022 in “International Journal of Health Sciences” In this study, researchers formulated a hair tonic using various herbal extracts and reported effective antifungal and antibacterial properties, along with good consistency, spreadability, homogeneity, appearance, and pH balance.