Copper Amino Isolate Serum.

What the gurus are saying

The gurus who tested this serum praise how well it delivers on copper peptides, with one noting it handles that ingredient particularly skillfully. Both reviewers highlight the combination of copper peptides, amino acids, and B5 as a strength, and one counts it among their favorite serums overall. Not much feedback beyond these takes so far, so you're working with a smaller sample.