"Decaffeinated green tea extract significantly reduced inflammatory lesions on the nose, perioral area, and chin in post-adolescent women."
Lu, P., & Hsu, C. (2016). Does supplementation with green tea extract improve acne in post-adolescent women? A randomized, double-blind, and placebo-controlled clinical trial.. Complementary therapies in medicine, 25, 159-63 . https://doi.org/10.1016/j.ctim.2016.03.004.
Elsaie, M. L., Abdelhamid, M. F., Elsaaiee, L. T., & Emam, H. M. (2009). The efficacy of topical 2% green tea lotion in mild-to-moderate acne vulgaris. Journal of drugs in dermatology : JDD, 8(4), 358–364.
Forest, J. M., & Rafikhah, N. (2014). Oral aqueous green tea extract and acne vulgaris: a placebo-controlled study.
"EGCG significantly improved acne in an 8-week randomized, split-face, clinical trial, and was well tolerated"
Yoon, J. Y., Kwon, H. H., Min, S. U., Thiboutot, D. M., & Suh, D. H. (2013). Epigallocatechin-3-gallate improves acne in humans by modulating intracellular molecular targets and inhibiting P. acnes. The Journal of investigative dermatology, 133(2), 429–440. https://doi.org/10.1038/jid.2012.292
Green tea vs Benzoyl peroxide
"3% green tea cream is comparable to 4% benzoyl peroxide cream in the treatment of moderate to very severe acne. Side effects, although generally mild and transient, were more common in BP treated subjects."
Gan-Wong, J., Salcedo-Rubio, E., & Barcelona-Tan, J. (2003). Comparison between 3% green tea (Camellia sinensis) extract in cream and 4% benzoyl peroxide cream in the treatment of acne vulgaris: A randomized, double-blind clinical trial. Journal of the Philippine Society of Cutaneous Medicine, 4(1).(edited)
