常见问题解答 截至 2018 年 8 月，iHerb 使用第三方独立实验室 ABC Testing、Eurofins 和 Alkemist 进行产品测试。使用第三方独立实验室可确保结果的客观性和公正性。
iTested 确认产品补充剂成分表和/或营养成分表提供的信息是准确的。还对产品进行了如微生物分析和重金属分析之类的测试，以确认清洁标签标准。
每份 iTested 产品文档都注明了测试方法。
将每6个月对产品进行一次测试。
These formulas commonly combine ingredients such as biotin, collagen, vitamin C, zinc and silicReview the Supplement Facts panel for a specific formula.
Consider the ingredients included, nutrient amounts, serving size and product format. Third-party testing and certifications vary by brand; review the product label for details.
Biotin is one of the most common ingredients in hair, skin and nail supplements, but many formulas also include collagen, vitamin C, zinc and silicFormulations vary by brand; review the Supplement Facts panel.
Review the product label for important warnings, precautions and directions for use. If you have questions about whether a product is appropriate for you, consult your healthcare provider before use.
Most hair, skin, and nails formulas are formulated for general adult use regardless of gender, though some brands offer women's- or men's-specific versions with adjusted nutrient ratios.
