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Week 3-4: Dark spots may start fading, and overall skin tone becomes more even
They happen when hydrogen sulfide gas builds up in your digestive tract
Exposure to ambient moisture (e.g., from repeatedly opening a vial in a humid environment, or from a vial seal failure) introduces water that can degrade the peptide
Routine labs and a focused clinical history often clarify the cause
Full background is available in our TB-500 Thymosin Beta-4 research guide
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