News sources reported that British researchers examined 44 papers about whether enzymes added to detergent washing powders can cause skin reactions and concluded that "biological detergents do not cause skin irritation. They advised that doctors should look beyond laundry detergents for the true cause of eczema, rashes and itches.
Critics said this seems a good advice but the readers should be aware of some of the limitations of this study - the researchers have not described their searching methods, it is not clear if all relevant papers have been looked at, they may fail to detect some publications which could influence their conclusion. The researchers have declared their consultancy fees from Unilever.
Source: "Enzymes, detergents and skin: facts and fantasies" British Journal of Dermatology 158(6): 1177-1181, June 2008
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