Formulation and Evaluation of Herbal Hair Serum from Guava Leaf, Onion Peel, Neem Powder Extract

Hair fall and scalp disorders are increasingly common among young adults, creating a need for safe, plant-based alternatives to synthetic hair products. This study focuses on developing and evaluating an herbal hair serum formulated using concentrated hydro-alcoholic extracts of Psidium guajava (guava leaf), Allium cepa peel, and Azadirachta indica (neem) leaves.These botanicals are rich in flavonoids, polyphenols, limonoids, and antioxidants known to promote hair strengthening, follicle stimulation, and anti-dandruff effects. Each plant material was washed, oven-dried, powdered, and extracted using 70% ethanol, followed by water-bath concentration to obtain potent liquid extracts. The serum was prepared using aloe vera gel as the base along with humectants, solubilizer, pH regulator, and a preservative system. The optimized formulation showed good stability, homogeneity, and cosmetic acceptability. The combined extracts improved scalp health, reduced breakage, and enhanced hair texture, supporting their potential as effective components for herbal hair serums.