About DPS Department of Public Safety Ghk Cu Serum Peptides Intensive Serum Tripeptide 1 Ghk Cu Copper Peptide Acetyl Hexapeptide 8 Intensive Repair Reduces Wrinkle G DSIP, delta sleep inducing peptide. Few know it. Fewer use it well. Supports deeper delta wave sleep Improves REM cycles Works the same night it's taken I use it personally. When DSIP 10mg >99% Purity PeakForce Labs