...Perhaps, the most important question to answer is this, "How can I avoid blackheads in the first place and what should I do if it is too late and blackheads have already appeared?"...»
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«...By definition, an astringent is a substance that by nature causes the skin to constrict. Astringency is the effect caused by the tannins in certain fruits that make your mouth pucker. When you apply an astringent to your skin this causes the blood vessels to constrict and proteins to coagulate; the skin then hardens or toughens up....»
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