Always and to everyone it seems that the more foam there is ... the cleaner will be the clothes. Is this true? Is it something purely psychological that does not correspond to anything that ensures that the foam helps remove the dirt? These questions will be answered as we continue. Without belittling the cleaning efficacy of the foam, we can say that this may vary, is varied.
For machine washing, detergents with "low foam" are recommended since a lot of foam makes rinsing difficult. The foam is not what cleans, actually, foam is dissolved detergent that has passed through the fabric carrying the dirt and maintaining it in suspension.
Formerly, when soap alone was used for washing, foam was considered as the measure of the cleaning power. But now, with modern synthetic surfactants based detergents, foam and has not the value it had before.Detergents used to wash by hand have low amounts of foam activators.
If the wash temperature is high, the foam formed may flood out of the washing machine and therefore not act on the laundry as it ought. Too much foam reduces the action of the machine and hinders a good rinsing. As already explained, this at times causes graying of the garments.
There are many foam regulators, but few are optimal. Some do not act when the water is very hard (i.e. has a lot of lime), their performance also depends on the type of surfactant the detergent contains.
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