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iTested 確認 產品補充資料框和/或營養成分框 上提供的資訊正確無誤。 產品還經過測試以確認 符合清潔標籤標準，例如微生物分析和 重金屬分析。
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產品會每 6 個月測試一次。
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.
