The concept, basic elements, and basic principles of experimental design ofcosmetics human efficacy evaluation were summarized.The commonly used types and key points of experimental design were introduced. The new idea of the design of cosmetics human efficacy evaluation protocol was proposed to improve the ability of researchers to make a reliable experiment protocol.
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机译：The concept, basic elements, and basic principles of experimental design ofcosmetics human efficacy evaluation were summarized.The commonly used types and key points of experimental design were introduced. The new idea of the design of cosmetics human efficacy evaluation protocol was proposed to improve the ability of researchers to make a reliable experiment protocol.
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