Our Ingredients: What We Use (and Don’t)

Our Ingredients: What We Use (and Don’t)

Published on June 1, 2025 · By Dr. Katrina

Transparency matters. Here's a clear look into what goes into every ZK product — and what never will.

✅ Always Included:

  • ✓ Peptides
  • ✓ Niacinamide
  • ✓ Vitamin C derivatives
  • ✓ Plant-based hyaluronic acid

❌ Never Included:

  • ✗ Parabens
  • ✗ Phthalates
  • ✗ Artificial fragrance
  • ✗ Sodium lauryl sulfate (SLS)
“Every formula is designed to respect your skin — and your health.”
— Dr. Katrina