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A Skin-Care Glossary

2008-04-23来源:
Confused about skin-care terminology? Here's what several common terms mean:
  • Collagen. A protein that contributes to the elasticity of skin tissue.

  • Emollient. A lotion or cream that helps make skin smoother and softer.

  • Exfoliant. Any product that helps to remove dead cells from the skin's surface.

  • Humectant. A product that promotes the retention of moisture in the skin.

  • Hydration. The process of bringing more water into skin tissues.

  • SPF. Stands for sun protection factor, a numeric scale used to establish the effectiveness of a product at blocking the harmful rays of sunlight from reaching the skin. The higher the number, the greater the protection.

  • AHA. Stands for alpha-hydroxy acid. A natural acid, often derived from fruit, that helps slough off dead skin and speed up cell renewal. AHAs have emerged as one of the most important ingredients in skin care.