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None of those numbers are personal-use guidance

The COA should report benzyl alcohol concentration as a measured value (e.g., 0.9% or 9.0 mg/mL), not as "present" or "passes." The concentration is the critical parameter presence alone does not confirm that the preservative is at functional levels

Our clinicians review your health history to help ensure safety and appropriate dosing

Its ability to promote elastin and collagen production makes it a highly sought-after ingredient in anti-aging skincare, where the effects of GHK-CU can help reduce the appearance of fine lines, improve skin firmness, reduce visible signs of aging and enhance overall skin appearance