Soybean

The soybean is an oil plant with a high content of protein, lecithin and oils. Usually the oil is extracted first, the remaining mass (soya extraction meal or soya cake) is used as animal feed, but is also used as a meat and milk substitute (cow's milk allergy) in the form of soya milk. Soya products are contained in many foods. Fresh green pods ("pods") or various protein products (tofu and soy sauce) are used for direct human consumption.

Soybean oil is contained in the following preparations in medical exteriors
: Balneum Hermal®, Oil Bath Cordes®, Oleobal®, Sulfo Oil Bath Cordes®.

Soy extracts from soybeans, soya seedlings, soya sprouts and various soya oils are used in cosmetic formulations.
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Serine protease inhibitors are found in the extract of soybeans which are said to have a skin lightening potential (anti-aging). In a double-blind, placebo-controlled study, a lightening effect could be achieved with a soy cream. see also under soy plant

1. Wallo W et al (2007) Efficacy of a soy moisterizer in photoaging: a double-blind, vehicle-controlled, 12-week study. J Drugs Dermatol 6: 917-922