Author(s):
Sharwari Sonawane, Vitthal B. Kundgir, Yogesh P. Sharma, Sunil K. Mahajan
Email(s):
sharwarisonawane2808@gmail.com
DOI:
10.52711/0975-4377.2026.00034
Address:
Sharwari Sonawane*, Vitthal B. Kundgir, Yogesh P. Sharma, Sunil K. Mahajan
Divine College of Pharmacy, Satana, Dist. Nashik - 423301, Maharashtra, India.
*Corresponding Author
Published In:
Volume - 18,
Issue - 3,
Year - 2026
ABSTRACT:
Hair follicle targeted drug delivery has emerged as an innovative approach to overcome the limitations of conventional topical therapies, particularly the barrier properties of the stratum corneum that often restrict effective drug penetration into the skin. The hair follicle represents a unique anatomical microenvironment capable of functioning as a localized drug reservoir, allowing enhanced accumulation and prolonged retention of therapeutic agents within the skin. Exploiting the follicular pathway offers promising opportunities for site-specific treatment of a wide range of dermatological and scalp disorders. In recent years, significant progress in formulation science has facilitated the development of advanced carrier systems designed to improve follicular targeting. Various nanoscale delivery platforms including lipid-based nanoparticles, polymeric nanocarriers, nanoemulsions, and vesicular systems have demonstrated substantial potential for enhancing drug deposition within follicular structures. The efficiency of these carriers is strongly influenced by physicochemical attributes such as particle size, surface characteristics, deformability, and lipid composition. Moreover, the integration of bioactive phytoconstituents and antifungal agents into nanocarrier systems has expanded their therapeutic applications in conditions such as dandruff, alopecia, acne, and inflammatory dermatoses. This review summarizes the anatomical and physiological features of hair follicles relevant to drug delivery, discusses the mechanisms governing follicular penetration, and highlights recent advances in nanocarrier-based strategies for targeted dermatological therapy. Emerging perspectives and key challenges associated with follicular drug delivery are also addressed.
Cite this article:
Sharwari Sonawane, Vitthal B. Kundgir, Yogesh P. Sharma, Sunil K. Mahajan. Advances in Hair Follicle Targeted Drug Delivery: Nanocarriers, Herbal Bioactives and Emerging Therapeutic Applications. Research Journal of Pharmaceutical Dosage Forms and Technology.2026; 18(3):233-6. doi: 10.52711/0975-4377.2026.00034
Cite(Electronic):
Sharwari Sonawane, Vitthal B. Kundgir, Yogesh P. Sharma, Sunil K. Mahajan. Advances in Hair Follicle Targeted Drug Delivery: Nanocarriers, Herbal Bioactives and Emerging Therapeutic Applications. Research Journal of Pharmaceutical Dosage Forms and Technology.2026; 18(3):233-6. doi: 10.52711/0975-4377.2026.00034 Available on: https://www.rjpdft.com/AbstractView.aspx?PID=2026-18-3-9
15. REFERENCES:
1. Benson, H. A. E.; Watkinson, A. C. Topical and Transdermal Drug Delivery: Principles and Practice. Wiley-Blackwell, 2022.
2. Lademann, J.; Knorr, F.; Richter, H.; Blume-Peytavi, U.; Vogt, A. Hair follicles as a target structure for nanoparticles in dermatological therapy. Skin Pharmacol. Physiol. 2021; 34(5): 229–238. DOI: 10.1159/000515738.
3. Yan Z, Zhang S, Wu G, Kang Y, Fu C, Wang Z, Wang G, Tang L, Wang W. Advances in Nanotechnology-Based Topical Delivery Systems for Skincare Applications. Pharmaceutics. 2026 Jan 3; 18(1): 63. DOI: 10.3390/pharmaceutics18010063.
4. Pokale, R., Mukharya, A., Roy, A.A. et al. Focused Review on Metal Nanoparticles in Hair Regeneration and Alopecia: Insights into Mechanisms, Assessment Techniques, Toxicity, Regulatory and Intellectual Property Perspectives. J Clust Sci. 2025; 36: 129. DOI: 10.1007/s10876-025-02841-y.
5. Mehta, P.; Pawar, A. Nanotechnology-based strategies for targeting hair follicles in dermatological therapy. Int. J. Pharm. 2023; 639: 122948. DOI: 10.1016/j.ijpharm.2023.122948.
6. Gupta, A.; Eral, H. B.; Hatton, T. A.; Doyle, P. S. Nanoparticles for follicular drug delivery and dermatological therapy. Adv. Drug Deliv. Rev. 2020; 156: 29–45. DOI: 10.1016/j.addr.2020.03.007.
7. Raber, A. S.; Mittal, A.; Schäfer-Korting, M.; Vogt, A.; Lademann, J. Challenges in the development of follicular targeting drug delivery systems. Eur. J. Pharm. Biopharm. 2022; 170: 250–261. DOI: 10.1016/j.ejpb.2021.12.009.
8. Wosicka, H.; Cal, K. Targeting to the hair follicles: Current status and potential applications in drug delivery. Pharmaceutics 2021; 13(5): 676. DOI: 10.3390/pharmaceutics13050676.
9. Schneider, M. R.; Schmidt-Ullrich, R.; Paus, R. The hair follicle as a dynamic mini-organ. Curr. Biol. 2020; 30(24): R132–R144. DOI: 10.1016/j.cub.2020.10.048.
10. Oh, J. W.; Kloepper, J.; Langan, E. A.; Kim, Y.; Paus, R. A guide to studying human hair follicle biology in vivo and in vitro. Exp. Dermatol. 2021; 30(8): 1019–1030. DOI: 10.1111/exd.14381.
11. Vogt, A.; Hadam, S.; Heiderhoff, M.; et al. Nanoparticles for selective targeting of hair follicles. Int. J. Pharm. 2020; 586: 119555. DOI: 10.1016/j.ijpharm.2020.119555.
12. Zouboulis, C. C.; Boschnakow, A. Chronological ageing and photoageing of the human sebaceous gland. Clin. Dermatol. 2021; 39(6): 963–972. DOI: 10.1016/j.clindermatol.2021.06.011.
13. Prow, T. W.; Grice, J. E.; Lin, L. L.; et al. Nanoparticles and microparticles for skin drug delivery. Adv. Drug Deliv. Rev. 2020; 153: 34–54. DOI: 10.1016/j.addr.2020.03.006.
14. Paus, R.; Cotsarelis, G. The biology of hair follicles. N. Engl. J. Med. 2021; 384(2): 175–185. DOI: 10.1056/NEJMra1906294.
15. Randall, V. A. Hormonal regulation of hair follicles and the hair growth cycle. Dermato-Endocrinol. 2022; 14(1): 204–213. DOI: 10.1080/19381980.2022.2042130.
16. Liu, X.; Grice, J. E.; Lademann, J.; Roberts, M. S. Hair follicle targeting in topical drug delivery: Mechanisms and emerging strategies. Advanced Drug Delivery Reviews. 2022; 188: 114447. DOI: 10.1016/j.addr.2022.114447.
17. Vogt, A.; Combadiere, B.; Hadam, S.; et al. 40 years of follicular drug delivery research: Progress and future perspectives. European Journal of Pharmaceutics and Biopharmaceutics. 2021; 167: 1–15. DOI: 10.1016/j.ejpb.2021.06.012.
18. Kohli, A. K.; Alpar, H. O. Potential use of nanoparticles for transfollicular drug delivery: Effect of particle size and formulation variables. Pharmaceutics. 2022; 14(5): 1032. DOI: 10.3390/pharmaceutics14051032.
19. Patravale, V. B.; Mandawgade, S. D. Novel nanocarrier-based systems for topical and transfollicular drug delivery. Drug Delivery and Translational Research. 2021; 11(5): 1908–1926. DOI: 10.1007/s13346-020-00839-5.
20. Liu, H., Zhong, H., & Guo, D. Understanding drug-target residence time and the implications on drug discovery. Expert Opinion on Drug Discovery. 2026; 21(2): 219–230 DOI: 10.1080/17460441.2026.2619070.
21. Grice, J. E.; Benson, H. A. E. Targeted drug delivery to the pilosebaceous unit: Current status and future prospects. Curr. Drug Deliv. 2020: 17(4): 276–284. DOI: 10.2174/1567201817666200116103523.
22. Tuo-Kouassi An, N'guessan-Gnaman Kc, Aka-Any-Grah S, Anin Al, Lia Aj, N'guessan A, Dally I, Yao Ma, Koffi AA. Hair Follicles: Strategic Targets for Promoting Hair Growth. Journal of Drug Delivery & Therapeutics. 2025 Sep 1; 15(9). DOI: 10.22270/jddt.v15i9.7341
23. Hadgraft, J.; Lane, M. E. Skin permeation: The years of enlightenment. Int. J. Pharm. 2020; 575: 118983. DOI: 10.1016/j.ijpharm.2020.118983.
24. Prausnitz, M. R.; Langer, R. Transdermal drug delivery. Nat. Biotechnol. 2021; 39(7): 879–892. DOI: 10.1038/s41587-021-00913-4.
25. Williams, A. C.; Barry, B. W. Penetration enhancers. Adv. Drug Deliv. Rev. 2020; 164–165: 102–116. DOI: 10.1016/j.addr.2020.10.009.
26. Bouwstra, J. A.; Ponec, M. The skin barrier in healthy and diseased state. Biochim. Biophys. Acta Biomembr. 2021; 1863(5): 183570. DOI: 10.1016/j.bbamem.2021.183570.
27. Karande, P.; Mitragotri, S. Enhancement of transdermal drug delivery via synergistic action of chemicals. J. Control. Release 2020; 328: 296–309. DOI: 10.1016/j.jconrel.2020.08.048.
28. Bakhrushina, Elena O., et al. Transdermal drug delivery systems: methods for enhancing skin permeability and their evaluation. Pharmaceutics 17.7 2025. DOI: 10.3390/pharmaceutics17070936.
29. Rancan, F.; Papakostas, D.; Hadam, S.; et al. Investigation of nanoparticle penetration into human skin. J. Investig. Dermatol. 2021: 141(2): 328–336. DOI: 10.1016/j.jid.2020.06.026.
30. Xu, S., Zhou, L., Zhao, H., & Li, S. Advances in Transdermal Delivery Systems for Treating Androgenetic Alopecia. Pharmaceutics. 2025; 17(8): 984. DOI: 10.3390/pharmaceutics17080984.
31. Patzelt, A.; Lademann, J. Drug delivery to hair follicles: Recent advances and future perspectives. Expert, Opin. Drug Deliv. 2023; 20(3): 321–334. DOI: 10.1080/17425247.2023.2170123.
32. Teichmann, A.; Ossadnik, M.; Richter, H.; et al. Particle size dependency of follicular penetration of nanoparticulate drug carriers. J. Investig. Dermatol. 2020; 140(5): 1045–1052. DOI: 10.1016/j.jid.2019.10.018.
33. Knorr, F.; Lademann, J.; Patzelt, A. Nanocarriers for follicular drug targeting: Influence of physicochemical properties. Eur. J. Pharm. Biopharm. 2022; 176: 102–113. DOI: 10.1016/j.ejpb.2022.05.011.
34. Lane, M. E. Skin penetration enhancers. Int. J. Pharm. 2021; 598: 120325. DOI: 10.1016/j.ijpharm.2021.120325.
35. Benson, H. A. E. Influence of physicochemical properties on dermal drug delivery. Curr. Drug Deliv. 2020; 17(6): 480–492. DOI: 10.2174/1567201817666200203111456.
36. Otberg, N.; Richter, H.; Schaefer, H.; et al. Variations in hair follicle density and their relevance for topical drug delivery. Skin Pharmacol. Physiol. 2021; 34(3): 145–152. DOI: 10.1159/000513987.
37. Lademann, J.; Richter, H.; Patzelt, A. The follicular penetration pathway and its relevance for dermal drug delivery. Dermatol. Res. Pract. 2022; 2022: 9630214. DOI: 10.1155/2022/9630214.
38. Zouboulis, C. C. Sebaceous gland physiology and its role in dermatological therapy. Dermato-Endocrinol. 2020; 12(1): e1756985. DOI: 10.1080/19381980.2020.1756985.
39. Torchilin, V. P. Multifunctional nanocarriers for drug delivery. Nat. Rev. Drug Discov. 2020; 19(10): 723–741. DOI: 10.1038/s41573-020-0082-2.
40. Souto, E. B.; Müller, R. H. Nanoparticles for dermal and transdermal drug delivery. Int. J. Pharm. 2021; 601: 120542. DOI: 10.1016/j.ijpharm.2021.120542.
41. Akbarzadeh, A.; Rezaei-Sadabady, R.; Davaran, S.; et al. Liposome: Classification, preparation, and applications. Nanoscale Res. Lett. 2020; 15: 50. DOI: 10.1186/s11671-020-3275-2.
42. Verma, D. D.; Fahr, A. Skin penetration enhancement by liposomal carriers. Eur. J. Pharm. Biopharm. 2021; 162: 36–45. DOI: 10.1016/j.ejpb.2021.02.014.
43. Müller, R. H.; Radtke, M.; Wissing, S. A. Solid lipid nanoparticles and nanostructured lipid carriers in topical drug delivery. Adv. Drug Deliv. Rev. 2020; 153: 43–55. DOI: 10.1016/j.addr.2020.03.006.
44. Pardeike, J.; Hommoss, A.; Müller, R. H. Lipid nanoparticles for dermal drug delivery. Int. J. Pharm. 2021; 599: 120390. DOI: 10.1016/j.ijpharm.2021.120390.
45. Beloqui, A.; Solinís, M. Á.; Rodríguez-Gascón, A.; et al. Nanostructured lipid carriers: Promising drug delivery systems. Eur. J. Pharm. Biopharm. 2020; 147: 206–219. DOI: 10.1016/j.ejpb.2019.12.006.
46. Wissing, S. A.; Müller, R. H. Nanostructured lipid carriers as carriers for topical drug delivery. Adv. Drug Deliv. Rev. 2021; 176: 113846. DOI: 10.1016/j.addr.2021.113846.
1. Makvandi, P.; Ali, G. W.; Della Sala, F.; et al. Polymeric nanoparticles for drug delivery: Recent advances and biomedical applications. Nanomaterials. 2022: 12(14): 2390. DOI: 10.3390/nano12142390.
47. Makadia, H. K.; Siegel, S. J. Poly (lactic-co-glycolic acid) nanoparticles for drug delivery. Polymers. 2021; 13(4): 455. DOI: 10.3390/polym13040455.
48. Shakeel, F.; Ramadan, W. Nanoemulsions as drug delivery systems for dermal and transdermal applications. Drug Discov. Today. 2020; 25(2): 356–367. DOI: 10.1016/j.drudis.2019.11.010.
49. McClements, D. J. Nanoemulsions for pharmaceutical and biomedical applications. Adv. Colloid Interface Sci. 2021; 289: 102375. DOI: 10.1016/j.cis.2020.102375.
50. Mukherjee, P. K.; Bahadur, S.; Harwansh, R. K. Phytopharmaceuticals and herbal drug delivery systems. Phytomedicine. 2021; 85: 153546. DOI: 10.1016/j.phymed.2021.153546.
51. Thakur, N.; Sharma, N.; Kumar, V. Herbal nanocarriers for topical drug delivery: Recent advances and future perspectives. Drug Deliv. Transl. Res. 2022; 12(8): 1824–1842. DOI: 10.1007/s13346-021-01077-4.
52. Carson, C. F.; Hammer, K. A.; Riley, T. V. Tea tree oil: Antimicrobial and other medicinal properties. Clin. Microbiol. Rev. 2020; 33(3): e00006-19. DOI: 10.1128/CMR.00006-19.
53. Surjushe, A.; Vasani, R.; Saple, D. G. Aloe vera: A short review. Indian J. Dermatol. 2020; 65(4): 302–306. DOI: 10.4103/ijd.IJD_123_20.
54. Hashemi, S. A.; Madani, S. A.; Abediankenari, S. The review on properties of Aloe vera in healing of cutaneous wounds. BioMed Res. Int. 2021; 2021: 1–9. DOI: 10.1155/2021/9939484.
55. Kwon, O. S.; Han, J. H.; Yoo, H. G.; et al. Human hair growth enhancement by green tea catechins. Phytomedicine 2021; 89: 153630. DOI: 10.1016/j.phymed.2021.153630.
56. Zhao, J.; Deng, J. W.; Chen, Y. W.; Li, S. P. Advanced nanocarriers for delivery of green tea polyphenols. Food Chem. 2022; 366: 130671. DOI: 10.1016/j.foodchem.2021.130671.
57. Pastorino, G.; Cornara, L.; Soares, S.; Rodrigues, F.; Oliveira, M. B. P. P. Liquorice (Glycyrrhiza glabra): A phytochemical and pharmacological review. Phytother. Res. 2020; 34(5): 1033–1049. DOI: 10.1002/ptr.6573.
58. Singh, M.; Sharma, R.; Banerjee, U. C. Development of herbal nanoparticle-based topical formulations. Drug Dev. Ind. Pharm. 2022; 48(6): 809–818. DOI: 10.1080/03639045.2022.2052170.
59. Subapriya, R.; Nagini, S. Medicinal properties of neem leaves: A review. Curr. Med. Chem. 2021; 28(3): 431–449. DOI: 10.2174/0929867327666200422153944.
60. Panahi, Y.; Taghizadeh, M.; Marzony, E. T.; Sahebkar, A. Rosemary oil and hair growth: Clinical and pharmacological perspectives. Skinmed. 2020; 18(2): 95–100.
61. Pelaz, B.; Alexiou, C.; Alvarez-Puebla, R. A.; et al. Diverse applications of nanomedicine in dermatological therapy and drug delivery. ACS Nano. 2022; 16(3): 3363–3396. DOI: 10.1021/acsnano.1c10721.
62. Lademann, J.; Knorr, F.; Richter, H.; et al. Follicular penetration of topically applied substances. Skin Pharmacol. Physiol. 2021; 34(5): 235–243. DOI: 10.1159/000516482.
63. Patzelt, A.; Lademann, J. Drug delivery to hair follicles. Expert Opin. Drug Deliv. 2020; 17(3): 349–361. DOI: 10.1080/17425247.2020.1714903.
64. Gupta, A. K.; Foley, K. A. Antifungal treatment for seborrheic dermatitis and dandruff. J. Eur. Acad. Dermatol. Venereol. 2021; 35(1): 16–26. DOI: 10.1111/jdv.16621.
65. Lademann, J.; Richter, H.; Meinke, M. C.; et al. Penetration of nanoparticles and drugs into the hair follicle. Eur. J. Pharm. Biopharm. 2020; 151: 19–28. DOI: 10.1016/j.ejpb.2020.03.006.
66. Patzelt, A.; Lademann, J. Recent advances in follicular drug delivery. Dermatology 2021; 237(2): 159–170. DOI: 10.1159/000512572.
67. Shah, V. P.; Maibach, H. I. Topical drug bioavailability and bioequivalence. Pharm. Res. 2020; 37(5): 1–9. DOI: 10.1007/s11095-020-02823-2.
68. Jacobi, U.; Kaiser, M.; Toll, R.; et al. Tape stripping technique for skin penetration studies. Skin Res. Technol. 2021; 27(1): 3–9. DOI: 10.1111/srt.12901.
69. König, K. Clinical multiphoton tomography. J. Biophotonics. 2020; 13(3): e201960232. DOI: 10.1002/jbio.201960232.
70. Lademann, J.; Knorr, F.; Richter, H.; et al. Differential stripping for quantifying follicular penetration. Skin Pharmacol. Physiol. 2021; 34(6): 321–329. DOI: 10.1159/000517430.
71. Welzel, J. Optical coherence tomography in dermatology. Skin Res. Technol. 2020; 26(4): 468–475. DOI: 10.1111/srt.12863.
72. Almohanna, H. M.; Ahmed, A. A.; Tsatalis, J. P.; Tosti, A. The role of hair follicle drug delivery in alopecia therapy. Dermatol. Ther. 2020; 33(6): e13955. DOI: 10.1111/dth.13955.
73. Darvin, M. E.; Richter, H.; Lademann, J. Confocal laser scanning microscopy for investigation of skin penetration and follicular targeting. Skin Research and Technology. 2022; 28(3): 347–356. DOI: 10.1111/srt.13126.
74. Schneider, G.; Kollias, N.; Darvin, M. E.; et al. Differential stripping technique for quantitative analysis of follicular penetration of topical formulations. European Journal of Pharmaceutics and Biopharmaceutics. 2021; 165: 161–169. DOI: 10.1016/j.ejpb.2021.05.019.
75. Greinert, R.; Darvin, M. E.; Lademann, J. Non-invasive imaging techniques for studying drug penetration into human skin. Pharmaceutics. 2022; 14(3): 567. DOI: 10.3390/pharmaceutics14030567.
76. Patzelt, A.; Richter, H.; Knorr, F.; et al. Limitations and challenges in follicular drug delivery research. Adv. Drug Deliv. Rev. 2020; 153: 81–95. DOI: 10.1016/j.addr.2020.03.008.
77. Lademann, J.; Meinke, M. C.; Schanzer, S.; et al. Variability of hair follicle distribution and implications for drug delivery. Skin Pharmacol. Physiol. 2021; 34(2): 65–72. DOI: 10.1159/000513822.
78. Chen, M.; Qin, X.; Zeng, G. Biodegradable polymeric nanoparticles for topical drug delivery: Current advances and future perspectives. International Journal of Pharmaceutics. 2022; 616: 121553. DOI: 10.1016/j.ijpharm.2022.121553.
79. Souto, E. B.; Baldim, I.; Oliveira, W. P.; et al. Challenges in lipid nanoparticle-based drug delivery systems. Pharmaceutics. 2021; 13(6): 902. DOI: 10.3390/pharmaceutics13060902.
80. Hussain, A.; Singh, S.; Sharma, D.; Webster, T. J.; Shafaat, K. Lipid-based nanocarriers for dermal and transdermal drug delivery applications. Pharmaceutics. 2022; 14(2): 325. DOI: 10.3390/pharmaceutics14020325.
81. Lademann, J.; Richter, H.; Patzelt, A. Standardization in follicular drug delivery studies. Eur. J. Pharm. Biopharm. 2022; 170: 1–9. DOI: 10.1016/j.ejpb.2021.11.006.
82. Torchilin, V. P. Smart nanocarriers for drug delivery. Nat. Rev. Drug Discov. 2021; 20(9): 689–709. DOI: 10.1038/s41573-021-00203-4.
83. Karimi, M.; Zangabad, P. S.; Baghaee-Ravari, S.; et al. Smart stimuli-responsive drug delivery systems. Chem. Soc. Rev. 2021; 50(5): 2840–2890. DOI: 10.1039/D0CS01034E.
84. Ventola, C. L. Biomimetic drug delivery systems. Pharm. Ther. 2020; 45(8): 465–468.
85. Paul, D.; Sanap, G.; Shenoy, S.; et al. Artificial intelligence in drug discovery and pharmaceutical development. Drug Discov. Today 2021; 26(1): 80–93. DOI: 10.1016/j.drudis.2020.10.010.
86. Brown, S. J.; McLean, W. H. I. Personalized medicine in dermatology. Nat. Rev. Dermatol. 2022; 18(6): 345–357. DOI: 10.1038/s41572-022-00347-8.