Health products such as toothpaste and razor blades can double in price over a single year period, study finds

Research by consumer champions at Which? found that supermarkets have a ‘promotion cycle’ where the prices of goods can fluctuate by more than 100 per cent across a timeline of months.Research by consumer champions at Which? found that supermarkets have a ‘promotion cycle’ where the prices of goods can fluctuate by more than 100 per cent across a timeline of months.Read MoreHealth News | Mail Online