Sample Set comes with: Niacinamide Serum, Antioxidant Serum, Vitamin C Serum, Rejuvenative Serum & Clarifying Serum. All sample products come in 1/4 ounce jar samples. These highly nourishing facial treatment serums are a great addition to your professional treatments. They will have your clients feeling refreshed and rejuvenated. A little goes a long way!