目的：研究白苞裸蒴的化学成分。

Objective:To study the chemical constituents of Gymnotheca involucrata .

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本款不含美白成份，其配方可以或许抵御广谱UVA/UVB射线，辅助肌肤使其在利用不含化学成份的防晒乳后仍然保持水分。

This non-whitening formula provides broad-spectrum UVA/UVB protection and helps keep skin hydrated without using chemical sunscreen actives like octinoxate and oxybenzone.

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评估市售或由牙医师提供含化学成份之牙齿美白产品的效用(与安慰剂或其他有效的产品相比较)以及副作用。

To evaluate the effectiveness (versus a placebo or another active product) and side effects of over-the-counter or dentist-dispensed chemically-based tooth whitening products designed for home use.

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