The 21-year-old from Switzerland beat second seed Petra Kvitová in three sets.
Belinda Bencic's fairytale run in Dubai is complete.
She upset 2013 winner Kvitová 6-3, 1-6, 6-2 in the finals of the Dubai Duty Free Tennis Championships.
Earlier in the day it was number three seeds Barbora Strycova and Hsieh Su-wei who defeated Lucie Hradecka and Ekaterina Makarova to win their second doubles title together in the emirate.

Man City drop points in chase of Arsenal, Liverpool and Man Utd also draw
Desert Vipers seal first DP World ILT20 crown after victory over MI Emirates
Cameroon through to take on Morocco in Cup of Nations
Bangladesh will not play T20 World Cup matches in India over 'players' safety'
Root-Brook stand lifts England before weather intervenes in final Ashes Test