Diet Pepsi is quietly changing its sweetener ahead of a major rebranding of the soft drink set for next month.
The change comes as PepsiCo Inc. looks to reinvigorate its namesake brands after losing market share to Coca-Cola Co. in recent years.
Cans of Diet Pepsi around the country now list a mix of two artificial sweeteners, a pairing that is commonly found in newer diet sodas. Previously, Diet Pepsi used only aspartame, which is sensitive to heat and breaks down more easily.
Although the switch is only intended to help prevent the taste from degrading over time, companies are often sensitive to public perceptions that they might be tinkering with major brands. PepsiCo executives likely don’t want to call any attention to the use of artificial sweeteners in the drink either.
When reached for comment Sunday, PepsiCo spokeswoman Andrea Canabal said that Diet Pepsi using the new sweetener mix started hitting shelves in early December. She said the new mix will be more widely available in the coming weeks.
“It’s not like a light switch. It’ll start appearing as shelf space clears,” she said. In January, Canabal said the company is planning a major ad campaign that will include a new logo with a heart and the theme “Love Every Sip.”
The sweetener change will not be explicitly communicated in the ads, which will feature actress Sofia Vergara.
The move to improve Diet Pepsi comes amid a broader push by PepsiCo to boost sales of its flagship soda. Under pressure from investors, CEO Indra Nooyi earlier this year announced the company would step up investment in its flagship brands.
Already this year, PepsiCo has made several splashy moves including a wide-ranging partnership with singer Beyonce and a multiyear deal with the National Football League to sponsor the Super Bowl halftime show. TV ads for Pepsi have also featured singer Nicki Minaj, New Orleans Saints quarterback Drew Brees, the boy band One Direction and international soccer stars including Lionel Messi.
Whether the efforts will pay off with increased sales remains to be seen. In the latest quarter, PepsiCo said its soda volume in North America fell 2%, reflecting the broader decline in soft drink consumption that has plagued the industry since 1998. But the company noted that its share of the U.S. market had improved.
For now, Diet Pepsi remains the No. 7 carbonated soft drink in America with 4.9% of the market, according to Beverage Digest. That’s down from 5.3% in 2000. Meanwhile, Diet Coke’s share has increased in that time from 8.7% to 9.6%. Diet Coke, which still only uses aspartame, overtook regular Pepsi to become the No. 2 soda brand in 2010.
Coke remains No. 1 and Pepsi is No. 3.