combination of glutathione and vitamin c & C: Your Skin's Favourite Combo Glutathione vs Vitamin C: Which
Description
Overuse or combining several copper peptide products simultaneously can cause temporary skin imbalance or dryness

Storage: Keep the product in a cool, dry place away from sunlight

Here is how that works, and why it matters

Each small line on a 50-unit syringe represents 1 unit
