求翻译：Originally developed by Union Swiss in 1987, the Bio Oil formulation was the brainchild of scientist Dieter Beier, the owner of Union Swiss at the time. His experience developing skincare products in the 70’s and 80’s was that oil worked best as a base for skincare products, especially those that included vitamins and plant extracts. Creams and lotions, which have water as their main ingredient, did not seem to have the same efficacy. Following his instinct, he launched Bio Oil onto the market as a “skin tonic”.是什么意思？

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