It is so much better to listen to what people say and do. It means that the person thinks that it is easy to either predict or see by your facial or body expressions what you are thinking or what you will do next. Think of poker players and how they hide their reactions to their cards.
This doesn't mean you can take vitamins or apply topical vitamin C and then bake safely in the sun, but you can help keep your skin healthy and supple by making sure you get enough of this antioxidant vitamin [source: Bouchez].
Topical antioxidants produce much higher concentrations in the skin than nutritional supplements. In fact, applying vitamin C to the skin is 20 times more effective than oral ingestion.11 Simply applying vitamin C daily for three days can achieve optimal levels in the skin. It is also known that once a topical antioxidant is absorbed into the skin, it cannot be washed or rubbed off.