Pros
I worked there during my semester break, and I can recommend it for students looking for part-time jobs. I thought it was fun and I really enjoyed the diverse group of people in the workplace. Everyone was accepting and indiscriminate. I was lucky to have worked with coworkers who were like-minded and I made friends there. Part of the job is talking to engage the customers in conversations about the products and that has pulled me out of my shell even outside of work. Even as an introvert, I am more likely to approach people for conversations now because of 'exposure therapy' that was customer service. Plus, you always come home smelling like the Lush store. If you ride public transportation home back from work, I can guarantee you will be the best smelling person there.
Cons
As with any retail jobs, you would be working on your feet and it does get tiring standing up all day. We were not allowed to sit during shifts and part timers only get a 15 minute break during their whole shift. The environment can be very corporate when the managers and higher-ups push employees to meet the sales target.