OBAGI PROFESSIONAL-C SERUM 15% 1.0 OZ Pack of 1By Designer / October 25, 2020 Price: $102.00(as of Oct 25, 2020 20:41:59 UTC – Details) Highly-concentrated serum with 15% L-ascorbic Acid (vitamin C) for most skin types. Helps minimize the appearance of fine lines and wrinkles, while leaving your skin feeling silky soft. Buy Now on Amazon