Tamanna Roashan was born on December 6, 1984, in Los Angeles, California. Her father, Mujtaba K. Roashan, is an Afghani Muslim, and her mother, Sujata Roashan, is a Hindu Indian. This diverse cultural background makes her fifty percent Afghan and fifty percent Indian. She began her career in makeup artistry at the age of 17, focusing on bridal hair and makeup. Over time, she established herself as a renowned makeup artist and beauty educator, founding the brand DressYourFace. She also offers live online makeup and hair classes through DressYourFaceLive.com.

In October 2010, Tamanna married musician Khushal Aqmal. The couple has two children: a daughter named Aliya and a son named Riyan Aqmal.