Mariia Yefrosynina was born in Kerch, Crimea. She graduated from Taras Shevchenko National University of Kyiv. She is a certified translator of Spanish and English. She is a TV presenter and co-founder of the NGO Masha Foundation, which focuses on the psychological rehabilitation of women and their children affected by war. She is an Honorary Ambassador of the UN Population Fund in Ukraine, advocating for gender equality and the fight against violence. She is also the author and host of YouTube projects such as Exam. New Reality and the show Grown-Up Girls, which she co-hosts with Olya Polyakova.