When it comes to the emotive breast-versus-bottle debate, most developed countries follow the World Health Organisation and Unicef's International Code on Marketing of Breast-milk Substitutes, drawn up in 1981.
Baby, or infant, formula is a manufactured food for babies often used as a substitute for breast milk. It is a powder or liquid concentrate that is mixed with water and fed through a bottle. It is widely used in Asia, which represents 53% of the global market share. In Hong Kong, a shortage in availability of baby formula led to restrictions on how much could be taken out of the city and into mainland China.