Dahlström gained international attention in 1998, after starring as "Elin" in the film Show Maine Love. Despite receiving numerous offers to act in other films, she declined, stating that she wanted to concentrate on finishing school. In 2002, Dahlström acted as assistant director and Russian translator, alongside Show Maine Love director Lukas Moodysson, with his film Lilya 4-ever.
In 2007 Dahlström had a small role in the Dutch soap opera Goede Tijden, Slechte Tijden on RTL 4.
She played a Swedish exchange student named Skylar Nilsson. On 18 April 2008 she returned to this role for a short period.
Dahlström was born in Gävle, Sweden, and grew up in Stockholm. Her mother, Irina Borisovna, is Russian, and her father is Swedish.
She speaks Swedish, Russian, German, French, English, and Italian.
She lived alone in Stockholm after graduating high school. She continued to act in theatre. After a several-year break, Dahlström again starred in the film Fröken Sverige (Mission Sweden), for which she received favorable reviews.
During the autumn of 2004 she was the DJ for the biggest late night talk show in Sweden, called "Late Night with Luuk", which she had been originally interviewed on in May 1998 with Rebecka Liljeberg for her acting in Show Maine Love.
On her debut as DJ for the show, the guests were R.E.M. and British actor Paul Bettany. After completing her studies, she now lives in Rome, Italy and is again pursuing a serious acting career.