The business woman was lauded as the "Queen of Green" for trailblazing business practices that sought to be environmentally friendly and won her renown in her native England and around the world.
"Businesses have the power to do good," she wrote on the Web site of the company, which was bought last year by the French company L'Oreal Group.
Roddick opened her first Body Shop outlet in 1976 in Brighton, southern England, before fair trade and eco-friendly businesses were fashionable.
She said her business ethics were inspired in part by women's beauty rituals that she discovered while traveling in developing countries and lessons from closer to home that her mother passed on from life during the hard years of World War II.
"Why waste a container when you can refill it? And why buy more of something than you can use? We behaved as she did in the Second World War, we reused everything, we refilled everything and we recycled all we could," Roddick wrote.
The Body Shop opposed product testing on animals and tried to encourage development by purchasing materials from small communities in the Third World. It also invested in a wind farm in Wales as part of its campaign to support renewable energy, and it set up its own human rights award.
The company has grown into a global phenomenon with nearly 2,000 stores in 50 countries and remains independently run despite being owned by L'Oreal Group.
In recognition of Roddick's contribution to business and charity, Queen Elizabeth II made her a dame, the female equivalent of a knight, in 2003.
Greenpeace executive director John Sauven called Roddick an "incredible woman" who would be "sorely missed.
"She was so ahead of her time when it came to issues of how business could
be done in different ways, not just profit motivated but taking into account environmental issues," Sauven said. "When you look at it today, and how every company claims to be green, she was living this decades ago," he added.
Roddick, the daughter of Italian immigrants, said she opened her Brighton store with only modest hopes.
"I started the Body Shop simply to create a livelihood for myself and my two daughters while my husband, Gordon, was trekking across the Americas," she wrote. "I had no training or experience ... ."
Roddick and her husband stepped down as co-chairmen of the company in 2002, but she continued to contribute as a consultant.
She joked that the Body Shop's trademark green color scheme came by accident because it was the only color that could cover the mold on the walls of her first shop.