When I checked into my room at the Park Hyatt Tokyo for the first time, in 2006, I got to sample Aesop skin and haircare products and have been using them ever since. I took the products home and continued to use the 50ml containers for a number of years, refilling them over and over when travelling. The Four Seasons hotel group claims to have been the first to introduce complimentary in-room shampoo and other toiletries, inventing the hotel amenity as we know it today. The alternative – travelling with carry-on liquids – is challenging, but about the only thing I will use from a hotel’s amenities now is a bar of soap or a refillable dispenser. Everything else is packaged in plastic and often disposed of partially used and replaced daily by housekeeping. Once welcomed as a perk for clients, the provision of amenities is now a bit of a headache for the hospitality sector. Hotels want to offer products that fit with their brand positioning. Recycled plastic is considered lacking in premium feel and glass is a health and safety risk, so something like PET (polyethylene terephthalate, a plastic widely used for packaging) is the easy option. It can be recycled, yes, but where reliabl...