1] Li J, Xiong M, Fu XH, et al. Determining a multimodal aging clock in a cohort of Chinese women. Med. 2023 Nov 10;4(11):825-848.e13.
[2] Zasada M, Budzisz E, Erkiert-Polguj A. A Clinical Anti-Ageing Comparative Study of 0.3 and 0.5% Retinol Serums: A Clinically Controlled Trial. Skin Pharmacol Physiol. 2020;33(2):102-116. doi: 10.1159/000508168B4
[3] Kikuchi K, Suetake T, Kumasaka N, Tagami H. Improvement of photoaged facial skin in middle-aged Japanese females by topical retinol (vitamin A alcohol): a vehicle-controlled, double-blind study. J Dermatolog Treat. 2009;20(5):276-81. doi: 10.1080/09546630902973987B4
[4] Mellody KT, Bradley EJ, Mambwe B, Cotterell LF, Kiss O, Halai P, Loftus Z, Bell M, Griffiths TW, Griffiths CEM, Watson REB. Multifaceted amelioration of cutaneous photoageing by (0.3%) retinol. Int J Cosmet Sci. 2022 Dec;44(6):625-635. doi: 10.1111/ics.12799B4
[5] Prospective,randomized,doubleblind assessment of topical bakuchiol and retinol for facial photoaging, S Dhaliwal et al, British J Dermatology, 180:289-296, 2019