For example, putting on a moisturizer before applying a sunscreen or a retinol cream can keep the active ingredient from soaking in.
举例来说，先擦保湿霜，然后再应用防晒霜或精纯维他命，这样可以防止活性成分渗入皮肤。
When prepared as a dietary supplement, retinol is stabilized as the ester derivatives retinyl acetate or retinyl palmitate.
当制成膳食补充剂时，视黄醇稳定为乙酸视黄酯或棕榈酸视黄酯的酯衍生物。
Supplements made from the liver of the fish, such as cod liver oil, contain the retinol form of vitamin a and need to be avoided altogether during pregnancy.
从鱼肝中提炼出来的产品，比方说鳕鱼的肝脏油，富含维他命a，这是怀孕中应该要避免使用的。
Lotion containing retinol was used on one arm of each participant, while a lotion without retinol was applied to the other arm.
将含维生素a的洗剂用在受试者一只胳膊上，而另一只胳膊应用不含维生素a的洗剂。
Lotion containing retinol was used on one arm of each participant, while a lotion without retinol was applied to the other arm.
将含维生素a的洗剂用在受试者一只胳膊上，而另一只胳膊应用不含维生素a的洗剂。
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