The Russian Amber Imperial Shampoo is one of those products that looks more like elixir than hair wash. Its sturdy gold pot, which holds 355ml of mostly natural ingredients, such as chamomile, rosemary and nettle, can be easily found on the luxury fashion website Net-a-Porter. A shampoo fit for a tsar, perhaps, given it retails for $256.

This particular pot of gold from luxury haircare brand Philip B is hardly an anomaly. Cult haircare brand Oribe, which launched in Australia in 2014 with an aim to mimic designer perfume in its fragrance and packaging design, has a "restore shampoo", a litre of which will set you back $265. The company, which was acquired by KAO manufacturers in 2017 for $620 million, is now so successful it has a skincare line, too.