Shukla, R.K., Malik, R., Upadhyay, R. and Punyani, S. 2026. Efficacy evaluation of a topical formulation containing green tea and willow bark extract for acne and post-acne mark reduction in Indian subjects: a double-blind clinical study. International Journal of Research in Dermatology. 12, 6 (Oct. 2026), 626–632. DOI:https://doi.org/10.18203/issn.2455-4529.IntJResDermatol20263741.