🎯 At a Glance
🔬 How It Actually Works
A synthetic, inorganic salt that acts as a strong antioxidant and preservative. It is specifically used to prevent the oxidation of highly unstable active ingredients, like pure Vitamin C or Hydroquinone.
💖 Why your skin loves it
Ensures volatile serums stay active and clear, rather than turning brown and useless.
💡 Pro Tip
Can cause contact dermatitis in individuals with a specific sulfite allergy.
⚖️ Myth vs. Fact
The Myth
It is a harsh bleach.
The Science
It simply stops oxygen from destroying the active ingredients in the bottle.
