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.

Penalty heroics help Leeds beat West Ham to reach FA Cup semis
Pogačar wins Tour of Flanders for record-equalling third time
Fixing length does the trick for Rajasthan spinner Bishnoi
Barcelona beat 10-man Atletico to take major step towards title
Southampton's Charles nets late winner to stun Arsenal 2-1 in FA Cup