Quality Street is axing the famous bright plastic wrapping on its chocolates to make them more environmentally friendly - and stop nearly two billion wrappers a year ending up in landfill.
The change to the foil wrapping comes after 86 years and is expected to be made in time for Christmas.
Chocolates such as strawberry delight will continue to come in bright wrapping which will instead be coated in a vegetable-based wax.
Quality Street manufacturers Nestle said it believes people will respond "positively" when it unveils the new plastic-free wrappings in the coming weeks.
Head of sustainability, Cheryl Allen, said: "Quality Street is a brand that people feel very strongly about.
"We know that opening the lid and seeing 'the jewels', as we call them, is really important.
"We think we've done a really good job with the redesign and feel confident that people will respond positively."
Around 1.7 billion Quality Street chocolates are enjoyed every year in the UK.
Nestle has been working for a number of years to reduce packaging and food waste across its products.
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On its website, the company says: "Packaging helps protect food and beverages, ensure product quality and safety, communicate nutritional information and prevent food waste.
"However, these essential requirements should not come at the expense of the planet.
"That's why we are continually developing more sustainable packaging and committed to reducing waste from packaging."