Mother-of-three Ahdie Khayatzadeh passed away after suffering serious burns in the fire at the shop in Stirling.
Police have launched a murder investigation and are waiting to speak to her estranged husband Ahmad Yazdanparsat, who was also injured during the incident and is receiving treatment in hospital.
Last night her family released a statement via the police saying they were devastated and that her death had left a huge void in their lives.
The couple had twin 20-year-old daughters, Glara and Gloria, and a 12-year-old son.
The statement said: "Ahdie was a wonderful woman who was devoted to her family and spent every spare minute she could with them.
"She was hard working and entrepreneurial, and was well-known in the city to the many patrons of her businesses. We are devastated by her untimely death, which has left a huge void in our lives which can never be filled.
"As a very close family, we are finding it very difficult to come to terms with our loss and ask to be left to grieve in peace."
The fire at Ms Khayatzadeh's basement shop, Venus Hair & Beauty in Maxwell Place, broke out at 11.45am on Saturday.
Members of the public and local shopkeepers rushed to try and rescue her, but they were beaten back by thick smoke and intense heat.
According to witnesses, Mr Yazdanparsat had earlier emerged from the smoke and collapsed on the pavement, where he was given first aid.
Rescue services later arrived and firemen were able to pull the hairdresser from the blaze.
Both she and her husband were taken to Forth Valley Hospital in Larbert for treatment.
Burns specialists from Glasgow were called in to help treat Ms Khayatzadeh's injuries, but she died later that evening.
Her husband was treated in the accident and emergency department at the hospital for smoke inhalation before then being transferred to the intensive care unit of a hospital in Glasgow.
Police have appealed for witnesses to the fire to come forward and want to speak to two men seen giving first aid to Mr Yazdanparsat.
The men wore a checked shirt and a dark jacket.
Officers were also keen to speak to four people who were seen in the area - a man who passed with a bike, a woman who left the salon just before the fire, a man with a light jacket and a woman with long boots.
Police are not thought to be looking for anyone else in connection with the fire, although patrols in Stirling have been stepped up.
The couple, who were originally from Iran, were reportedly going through a bitter divorce and had separated in 2010.
Mr Yazdanparsat, who owned the Taste and Spice takeaway above Ahdie's salon, opposed the separation when the case went to court.
He was found in contempt of court at a hearing in April after disrupting proceedings by crying, banging his head on a table and ranting angrily at a sheriff.
In a judgment, issued at the Court of Session in Edinburgh in April this year, Lady Smith said there was considerable tension between the couple.
The judge recorded: "The parties are spouses. The wife is the pursuer in an action of divorce which is being litigated in Stirling Sheriff Court.
"Her husband, the defender, does not want to be divorced."
Lady Smith, in her judgment, said: "There is evidently considerable tension between them. The defender has been excluded from further participation in the litigation and has been found to have been in contempt of court."
Detective Superintendent Gary Flannigan of Forth Valley Division, said: "This is now a murder investigation and I would appeal to any witnesses who have not already spoken to the police to contact us as soon as possible by calling 101."