The Friesian cow pattern on the white bottle, which has been diluted over time to liquid splats, returns as a key brand icon.
The Frijj logo has been simplified and strengthened to provide the brand with "confidence and authenticity".
There will also be graphic cues in the typography, including strawberries, bananas and chocolate chunks, to highlight the natural flavour variants and to build the brand's quirky personality.
Dairy Crest has made improvements to the Frijj recipe and the design aims to highlight "no artificial ingredients" as a key statement of quality.
The refreshed packaging emphasises the natural and nutritional quality of the ingredients to maintain its appeal to target consumers including impulse purchasers, teenagers and mums.
Adrian Collins, managing director of Ziggurat Brands, said: "Even an iconic brand can, over time, see its meaning eroded through the evolution of the design. Our task, which I believe we have delivered against, was to re-focus the brand message."