“15% vitamin C with vitamin E, ferulic acid, and hyaluronic acid.”
The 15% L-ascorbic acid plus vitamin E, ferulic acid, and hyaluronic acid composition is the product's stated formula and the basis of its 'dupe plus hydration' positioning. The core C+E+ferulic trio is the Lin 2005 (PMID 16185284) stack, and 15% sits inside the Pinnell 2001 window. The composition claim holds.

