The design of the new store - next door to the previous location - has incorporated a variety of recycled materials, including furnishings crafted from reclaimed wood and worktops and shelving made entirely out of recycled plastic sheets.
A new party space has also been worked into the new store and it will be in use on their opening day.
From 10.30 to 11.30 on February 21, they'll have a Make your own 'Brightside Bubble Bar', followed by two sessions of 'Make your own Rocket Science Bath Bomb' at 12.30 to 1pm, and 2pm to 3pm.
Georgia Byng, Shop Manager at Lush Peterborough said: "The whole team is so excited to have more space to showcase our fresh, handmade products in a shop that has been tailored to our customers' needs.
"The new shop is a fantastic space for hosting events and parties and having a good old pamper."
Visitors to the shop will be able to pick up a varied selection of cosmetics, including plastic-free products, gifts and limited-edition Mother's Day products.