New mums love splashing cash on their little ones, with spending on baby products in the US up 23% between 2006 and 2013. But research has revealed that parents are giving more thought to their babies’ appearance, with Latino and Russian parents most conscious of their child's looks.

The make-up aisles of today's pharmacies are a bright spectrum of colour – but there's always that one perfect shade of lipstick no company seems to make. Harvard Business School graduate Grace Choi is eliminating this irritation with Mink – a 3D printer just for make-up.

Secret is America's best-selling female deodorant. Keen to encourage a new generation of consumers to take up the product, parent company P&G tapped into a broad social concern that connects parents and children alike: bullying.

From Avon ladies to Tupperware parties to Ann Summers soirees, peer-to-peer selling is an established business model for companies, with most aimed squarely at middle-aged women. But now Willa is hoping that Gen Zers can revive its brand by selling lip shimmer and face wash to their pals.