Styling Nature: A Comprehensive Review and Experimental Evaluation of Polyherbal Hair Gels in Cosmetic Science

Abstract

Natural or herbal hair gels are semi-solid cosmetic formulations developed for hair styling, protection, and nourishment. They hold increasing importance in cosmetic science as safer, multifunctional alternatives to synthetic gels. These formulations employ natural gelling agents such as carbopol, xanthan gum, or alginate, along with bioactive herbal extracts like Aloe vera, hibiscus, amla, fenugreek, onion, and curry leaves that deliver antioxidant, antimicrobial, and scalp-conditioning effects. The use of such bioactive aligns with the current consumer shift toward “clean,” biocompatible, and sustainable cosmetics. This review critically examines the literature on natural hair gels, synthesizing evidence from recent studies while integrating an experimental investigation into a polyherbal gel formulation developed using locally available botanicals. Evaluation parameters included pH, viscosity, spreadability, stability, and antimicrobial activity. Findings support the multifunctional potential of herbal gels in promoting hair health while maintaining desirable cosmetic performance. The review further discusses safety, market trends, and emerging innovations such as nano-delivery systems and biopolymer-based matrices. Future research should focus on standardization, clinical validation, and eco-friendly production strategies to establish scientifically robust, sustainable hair-care formulations.

Keywords

Introduction

Hair gels are semi-solid cosmetic preparations that provide hold, style retention, and manageability by forming a thin polymeric film on hair fibres. Beyond aesthetics, they can offer conditioning, gloss, and scalp protection when combined with functional ingredients (Patel & Mehta, 2020). In recent decades, a paradigm shift has occurred from synthetic polymer-based gels toward natural or herbal formulations, driven by concerns over chemical irritants and a global preference for biocompatible, eco-friendly cosmetics (Sharma & Gupta, 2019). Herbal hair gels integrate plant extracts or phytochemicals possessing antioxidant, antimicrobial, and anti-inflammatory properties. They cater to the “green beauty” trend, which merges traditional botanical knowledge with modern cosmetic formulation science (Kaur, Singh, & Arora, 2019). Unlike conventional products, they reduce risks of scalp irritation and hair damage while offering therapeutic benefits such as hair strengthening, dandruff reduction, and enhanced scalp microcirculation (Singh, Yadav, & Kumar, 2021). Common ingredients include natural gelling agents (carbopol, guar gum, xanthan gum), humectants (glycerine), and herbal extracts such as Hibiscus rosa-sinensis, Phyllanthus emblica (amla), Murraya koenigii (curry leaves), Aloe vera, and Trigonella foenum-graecum (fenugreek). These are rich in bioactive compounds—flavonoids, saponins, phenolics, and vitamins—that condition the scalp and support hair growth (Ravikumar, Jain, & Menon, 2019; Pandey, Mishra, & Singh, 2016). Other adjuvants such as onion extract, camphor, and vitamin E enhance microcirculation, provide cooling effects, and stabilize formulations (Bhatia, Singh, & Arora, 2018). In the current market, natural hair gels embody the convergence of cosmetic function, sustainability, and therapeutic efficacy. They meet consumer expectations for safety and eco-compatibility while enabling formulators to innovate with plant-derived polymers and encapsulated bioactive (Bhatia & Sharma, 2022). The following sections synthesize the literature and integrate experimental findings from a formulated polyherbal hair gel developed and evaluated using standardized cosmetic testing protocols.

METHODOLOGY

Review Method

Peer-reviewed articles published between 2018 and 2024 were analysed from indexed journals including International Journal of Cosmetic Science, Journal of Cosmetic Dermatology, Research Journal of Pharmacy and Technology, and Asian Journal of Pharmaceutical Research. Studies focusing on herbal or polyherbal hair gels were prioritized, particularly those employing standardized evaluation parameters such as appearance, viscosity, pH, stability, and antimicrobial assays (Devi, Suneetha, & Sivagami, 2024; Sreethu, Abdulla, Hasna, Krishnaveni, & Tibin, 2023; Mallamma, Prathima, & Rani, 2024).

Extraction and Formulation Procedures

Literature consensus indicates that herbal extracts are typically obtained using aqueous or hydroalcoholic solvents under controlled temperature and time conditions (Devi et al., 2024). Active constituents—alkaloids, flavonoids, tannins, and saponins—are screened qualitatively before formulation. Gelling agents like carbopol 940 or xanthan gum are hydrated in water, followed by the addition of humectants, preservatives, and neutralization using triethanolamine to achieve gel consistency.

Evaluation Parameters

Evaluation of hair gels involves a combination of physicochemical and microbiological tests (Birajdar, Gavhane, & Bhoyar, 2021). Appearance and homogeneity ensure uniform texture and absence of phase separation. Spreadability and viscosity determine user acceptability and rheological behaviour, typically measured with viscometers. pH (ideal 5.5–6.5) is checked for scalp compatibility. Stability studies under accelerated conditions assess physical consistency and microbial resistance. Antimicrobial assays (e.g., agar diffusion) evaluate inhibitory effects against scalp pathogens such as Candida albicans and Malassezia furfur. These parameters collectively reflect formulation quality, functionality, and safety.

Experimental Work

In the experimental component, a polyherbal hair gel was formulated using a combination of botanicals with complementary therapeutic actions: hibiscus, amla, banyan root, curry leaves, Aloe vera, onion, fenugreek seeds, and camphor, with carbopol 940 as the gelling base and vitamin E as an antioxidant stabilizer. The herbal ingredients were boiled, filtered, and mixed sequentially before incorporation into the hydrated carbopol gel base. Six trial formulations (F1–F6) were prepared, varying extract concentrations to determine the optimal balance of viscosity and sensory quality. The prepared gels were evaluated for appearance, spreadability, viscosity, pH, stability, and antimicrobial activity. All formulations exhibited smooth texture and ease of application. The optimized formula (F4) maintained pH 5.8 ± 0.1 and displayed stable viscosity with no phase separation during 30 days of storage. Agar-well diffusion assays indicated moderate antimicrobial activity attributed to the combined action of amla, onion, and camphor extracts.

Each formulation contained varying concentrations of herbal extracts and excipients. All values represent parts per 40 g of total formulation.

Table 1. Composition of Polyherbal Hair Gel Formulations (F1–F6)

RESULTS AND DISCUSSION

In the experimental phase, six polyherbal hair gel formulations (F1–F6) were prepared using varying proportions of botanical extracts and adjuvants (Table 1). Each ingredient was selected for its scientifically supported cosmetic and therapeutic role. Hibiscus rosa-sinensis contributes anthocyanins and mucilage that promote hair growth and impart smooth texture (Ravikumar, Jain, & Menon, 2019). Phyllanthus emblica (amla) is rich in ascorbic acid and tannins, strengthening hair shafts and reducing oxidative stress. Murraya koenigii (curry leaves) provides flavonoids and alkaloids with antioxidant and antimicrobial activity, while Aloe vera supplies polysaccharides that enhance hydration and scalp soothing (Pandey, Mishra, & Singh, 2016). Trigonella foenum-graecum (fenugreek) seeds add proteins and lecithin that condition hair and prevent breakage (Bhatia, Singh, & Arora, 2018). Allium cepa (onion) extract stimulates microcirculation and follicle activity, and camphor exerts cooling and antifungal effects. Vitamin E acts as an antioxidant stabilizer for both the formulation and scalp lipids.

Across formulations, pH remained within the physiologic range (5.5–6.5), confirming scalp compatibility. All gels exhibited smooth texture, good homogeneity, and spreadability suitable for cosmetic application. However, rheological behaviour, stability, and sensory acceptability varied according to the concentration of botanical extracts and gelling polymer. Formulation 1 (F1) contained lower polymer and higher banyan root content, leading to a relatively thin gel with slightly reduced viscosity and less stability during storage. Formulation 2 (F2) improved consistency with increased carbopol and hibiscus concentration but showed mild syneresis after 15 days, indicating limited polymer–extract compatibility. Formulation 3 (F3), with moderate polymer (1.8 %) and balanced ratios of hibiscus (7.5 %), banyan root (10.5 %), and fenugreek (5.5 %), yielded optimal results—smooth appearance, high viscosity, and excellent spreadability. It demonstrated no phase separation during 30-day stability testing and maintained desirable pH and gloss. Formulation 4 (F4) showed comparable viscosity but slightly heavier sensory feel due to higher onion and hibiscus levels. Formulations 5 and 6 (F5–F6), though richer in hibiscus, produced very viscous gels with reduced spreadability and aesthetic clarity, making them less consumer-friendly. Thus, F3 emerged as the most suitable formulation, combining physical stability, ease of application, and balanced sensory performance. These findings correspond with the rheological patterns reported in prior studies, where intermediate polymer concentrations provided optimum mechanical properties and consumer acceptance (Devi, Suneetha, & Sivagami, 2024; Gholap, Patil, & Dhole, 2024). The antioxidant and antimicrobial potential of the formulated gels reflected synergistic phytochemical interactions. Hibiscus and amla enriched the formulation with phenolic compounds that neutralize free radicals, while onion, curry leaves, and camphor imparted notable antimicrobial activity against scalp pathogens. The observed inhibition zones were comparable to those reported for polyherbal antifungal gels by Populwar, Khushbu, and Saxena (2024). Fenugreek’s protein content and mucilage contributed to the gel’s film-forming capacity, enhancing shine and reducing friction during combing. Aloe vera’s polysaccharides and glycerine improved moisturization and slip, consistent with sensory preferences reported by Bhatia and Sharma (2022). Together, these bioactive established a multifunctional product capable of providing hold, nourishment, and scalp protection—an advantage over single-herb or synthetic formulations. Results from the current study corroborate the broader literature emphasizing the superiority of polyherbal gels. Mallamma, Prathima, and Rani (2024) demonstrated that amla–hibiscus–neem blends improved both antifungal efficacy and user perception. Kamath and Dinesh (2024) similarly noted that multi-extract gels offer greater antioxidant synergy and reduced irritation potential than single-extract analogues. The success of F3 aligns with these findings, validating the concept that balanced polyherbal combinations yield optimal cosmetic and therapeutic performance. From a materials perspective, Carbopol’s shear-thinning rheology provided excellent spreadability, while the inclusion of humectants sustained gel hydration. The formulation’s physical stability parallels reports from contemporary polymer-based herbal gels that maintained uniformity and microbial safety under accelerated storage (Tahir & Ahmed, 2024). The present investigation highlights the importance of compositional optimization in natural cosmetic formulation. Too low an extract load yields underpowered biological effects, while excessive botanical solids compromise rheology and clarity. Formulation 3 achieved the equilibrium necessary for a commercially viable herbal gel—stable, aesthetically appealing, and biologically active. Its performance supports the concept that scientifically balanced polyherbal gels can compete with conventional products while meeting “green” formulation standards. However, consistent with observations by Sarkar and Gupta (2023), limitations include the absence of quantitative phytochemical profiling and in vivo hair-growth validation. Future studies should employ instrumental analyses (HPLC, LC-MS) to standardize extract content and extend evaluation to clinical performance metrics such as tensile strength and hair-fiber gloss.

CONCLUSION

Natural hair gels exemplify the fusion of cosmetic science and botanical therapy. The current literature and experimental findings confirm their potential to deliver both styling performance and therapeutic benefits. The formulated polyherbal gel demonstrated favourable physicochemical characteristics—optimal pH, spreadability, and stability—alongside moderate antimicrobial activity, corroborating earlier research that underscores the value of multi-extract formulations. Nevertheless, challenges persist, including variability in extract quality, insufficient clinical validation, and limited long-term stability data. Future research must prioritize clinical trials assessing anti-dandruff or hair-growth outcomes, along with phytochemical standardization using analytical tools such as HPLC or LC–MS (Sarkar & Gupta, 2023). Nanoencapsulation and liposomal systems can improve bioactive stability and targeted delivery (Tahir & Ahmed, 2024). Biodegradable polymer matrices such as cationic polysaccharides should replace synthetic carbomers to enhance sustainability (Bhatia & Sharma, 2022). Further exploration of phytochemical–keratin–microbiome interactions will deepen understanding of functional mechanisms. Extended stability and preservative challenge testing is necessary for shelf-life assurance, while dermatological safety profiling should ensure hypo allergenicity of polyherbal blends. Finally, adopting green chemistry extraction techniques, including solvent-free or low-energy processes, will support environmentally responsible cosmetic production. These advances will transform herbal hair gels from traditional home remedies into scientifically validated, eco-conscious, and high-performance cosmetic innovations.

ACKNOWLEDGMENT

We are grateful to Principal, SES’s R. C. Patel Institute of Pharmaceutical Education and Research, and Principal, SES’s R. C. Patel Institute of Pharmacy, Shirpur, 425405, Dhule, Maharashtra, India, for providing the necessary guidance and facilities for completing the project work.

CONFLICT OF INTEREST

The authors declare no conflict of interest.

FINANCIAL SUPPORT

Nil.

REFERENCES

1. Bhatia, N., Singh, R., & Arora, A. (2018). Phytotherapeutic potential of fenugreek in hair care formulations. Journal of Herbal Medicine, 12(2), 45–52.
2. Bhatia, S., & Sharma, K. (2022). Natural polymers and biopolymers in cosmetic formulations: Trends and applications. International Journal of Cosmetic Science, 44(5), 432–450. https://doi.org/10.1111/ics.12776
3. Birajdar, A. V., Gavhane, Y. N., & Bhoyar, A. S. (2021). Formulation and evaluation of herbal hair gel for hair growth activity. Medicon Pharmaceutical Sciences, 1(6), 37–44.
4. Devi, R., Suneetha, K., & Sivagami, B. (2024). Formulation and evaluation of herbal hair gel using curry leaves and flaxseed extracts. International Journal of Pharmaceutical Sciences Review and Research, 84(11), 110–116.
5. Gholap, S. D., Patil, M. V., & Dhole, N. S. (2024). Formulation and evaluation of flaxseed hair gel. International Journal of Novel Research and Development, 9(4), 420–426.
6. Kamath, A. R., & Dinesh, R. (2024). Review on polyherbal hair gel: A natural approach for hair care. Research Journal of Pharmacy and Technology, 17(3), 1342–1350.
7. Kaur, H., Singh, S., & Arora, R. (2019). Herbal cosmetics: A safer alternative. Journal of Herbal Medicine, 15(1), 100–107.
8. Mallamma, K. P., Prathima, M. R., & Rani, K. J. (2024). Formulation and performance of polyherbal anti-dandruff hair gel. Asian Journal of Pharmaceutical Research, 16(1), 71–77.
9. Pandey, R., Mishra, A., & Singh, P. (2016). Aloe vera: Nature’s soothing agent. Pharmacognosy Reviews, 10(19), 31–35.
10. Patel, P., & Mehta, K. (2020). Formulation and evaluation of herbal hair gels: A review. International Journal of Cosmetic Science, 42(4), 325–332.
11. Populwar, A., Khushbu, G., & Saxena, M. (2024). Formulation and evaluation of antifungal polyherbal hair gel. Research Journal of Pharmacy and Technology, 17(6), 2612–2618.
12. Ravikumar, K., Jain, P., & Menon, R. (2019). Role of Hibiscus rosa-sinensis in hair care: A pharmacological study. International Journal of Green Pharmacy, 13(2), 150–154.
13. Sarkar, S., & Gupta, D. (2023). Bioactive phytochemicals in herbal hair care formulations: Mechanisms and stability considerations. Journal of Cosmetic Dermatology, 22(3), 1121–1133. https://doi.org/10.1111/jocd.15542
14. Sharma, R., & Gupta, A. (2019). Herbal hair formulations: Current trends and future prospects. Asian Journal of Pharmaceutical Research, 9(3), 120–127.
15. Singh, V., Yadav, P., & Kumar, S. (2021). Herbal hair cosmetics: Advances and challenges. Journal of Natural Products, 18(2), 87–94.
16. Tahir, N., & Ahmed, S. (2024). Advances in natural gelling agents and polymers for cosmetic and pharmaceutical applications. Polymers, 16(7), 1259. https://doi.org/10.3390/polym16071259