TOPICAL ANTIOXIDANTS IN THE MANAGEMENT OF MELASMA WITH FOCUS ON SILYMARIN, VITAMIN C AND VITAMIN E
Keywords:
melasma, antioxidants, silymarin, vitamin C, vitamin E, topical therapyAbstract
Melasma is a chronic acquired hyperpigmentation disorder characterized by symmetrical brown macules on sun-exposed areas of the skin, predominantly affecting women of reproductive age. Its complex pathogenesis involves genetic predisposition, ultraviolet radiation, hormonal influences and oxidative stress. Increasing evidence indicates that oxidative mechanisms play a central role in melanocyte stimulation and melanin overproduction, which has directed scientific interest toward antioxidant-based therapeutic strategies.
The purpose of this review was to summarize and critically analyze available scientific data regarding the role of topical antioxidants in the management of melasma, with particular emphasis on silymarin, vitamin C and vitamin E. A structured review of relevant scientific literature was conducted using major electronic databases, including PubMed, ScienceDirect and Google Scholar. Clinical studies, experimental research and review articles evaluating antioxidant activity, mechanisms of action, safety and clinical outcomes were included in the analysis.
The reviewed literature demonstrates that topical antioxidants exert beneficial effects in melasma primarily through inhibition of oxidative stress, reduction of reactive oxygen species and modulation of melanogenesis-related pathways. Silymarin exhibits potent antioxidant and anti-melanogenic activity, with studies reporting significant reduction in pigmentation severity and a favorable safety profile. Vitamin C contributes to depigmentation by inhibiting tyrosinase activity, reducing oxidized melanin and enhancing photoprotection, while vitamin E supports membrane stabilization and acts synergistically with other antioxidants.
Although conventional depigmenting agents remain effective, their long-term use is often limited by irritation and safety concerns. In contrast, antioxidant-based topical therapies demonstrate good tolerability and suitability for prolonged application. However, variability in formulation stability, skin penetration and study design represents an important limitation in current research.
In conclusion, available evidence supports the role of topical antioxidants as valuable components in the management of melasma. Silymarin, vitamin C and vitamin E represent promising agents, either as monotherapy or as adjuncts to conventional treatment, highlighting the need for further well-designed clinical studies and optimized topical formulations.
References
Altaei, T. (2012). The treatment of melasma by silymarin cream. BMC Dermatology, 12, 18.
Chen, J., Liu, Y., Zhao, Z., & Qiu, J. (2021). Oxidative stress in the skin: Impact and related protection. International Journal of Cosmetic Science, 43(5), 495–509.
Choo, S. J., Ryoo, I. J., Kim, Y. H., Xu, G. H., Kim, W. G., Kim, K. H., Moon, S. J., Son, E. D., Bae, K., & Yoo, I. D. (2009). Silymarin inhibits melanin synthesis in melanocyte cells. Journal of Pharmacy and Pharmacology, 61(5), 663–667.
Gupta, A. K., Gover, M. D., Nouri, K., & Taylor, S. (2006). The treatment of melasma: A review of clinical trials. Journal of the American Academy of Dermatology, 55(6), 1048–1065.
Handel, A. C., Miot, L. D. B., & Miot, H. A. (2014). Melasma: A clinical and epidemiological review. Anais Brasileiros de Dermatologia, 89(5), 771–782.
Honigman, A., & Rodrigues, M. (2023). Differential diagnosis of melasma and hyperpigmentation. Dermatological Reviews, 4(1), 30–37.
Lee, A. Y. (2014). An updated review of melasma pathogenesis. Dermatologica Sinica, 32(4), 233–239.
Nofal, A., Ibrahim, A. M., Nofal, E., Gamal, N., & Osman, S. (2019). Topical silymarin versus hydroquinone in the treatment of melasma: A comparative study. Journal of Cosmetic Dermatology, 18(1), 263–270.
Rahimi, H., Mirnezami, M., Yazdabadi, A., & Hajihashemi, A. (2024). Evaluation of systemic oxidative stress in patients with melasma. Journal of Cosmetic Dermatology, 23(1), 284–288.
Rathee, P., Kumar, S., Kumar, D., Kumari, B., & Yadav, S. S. (2021). Skin hyperpigmentation and its treatment with herbs: An alternative method. Future Journal of Pharmaceutical Sciences, 7, 132.
Rigopoulos, D., Gregoriou, S., & Katsambas, A. (2007). Hyperpigmentation and melasma. Journal of Cosmetic Dermatology, 6(3), 195–202.
Sarkar, R., Devadasan, S., Choubey, V., & Goswami, B. (2020). Melatonin and oxidative stress in melasma: An unexplored territory; a prospective study. International Journal of Dermatology, 59(5), 572–575.
Thiele, J. J., Hsieh, S. N., & Ekanayake-Mudiyanselage, S. (2005). Vitamin E: Critical review of its current use in cosmetic and clinical dermatology. Dermatologic Surgery, 31(7 Pt 2), 805–813.
Victor, F. C., Gelber, J., & Rao, B. (2004). Melasma: A review. Journal of Cutaneous Medicine and Surgery, 8(2), 97–102.
Zheng, H., Pei, Q., & Yao, M. (2024). Understanding melasma: From pathogenesis to innovative treatments. Dermatologic Therapy, 2206130.
