填空题
Many people think of skin as a/an ______ to keep bad influences out of our body.
填空题
______ pores--the tiny openings in our skin, are one of the indicators of irritated skin.
填空题
Name two external factors that harm the skin.
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The skin is capable of mending itself and returning to its ______ state.
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A recent study on teenagers' skin shows that they suffer more stress around ______.
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In time of stress, we may let go of our healthy habits. Instead, we may smoke, eat junk food and skip ______.
填空题
To fight stress, we need to improve ______ and stick to our good habits.
填空题
Sleep is the golden advice, because it is a time of ______.
填空题
It's better to use ______ moisturizer as it won't cause irritation.
填空题
Retinol, a popular skin-care product, works against ______.