Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Peptides for Under Eye Bags: Mechanism Comparison

Palmitoyl Tetrapeptide-7 IL-6 inhibition, reduces vascular permeability and inflammation-driven edema RCT: 35% reduction in periorbital puffiness at 8 weeks (J Cosmet Dermatol 2022) Requires liposomal delivery or dimethyl isosorbide. Molecular weight 500 Da In

This source-based comparison does not add ratings or recommend a winner.

  • Palmitoyl Tetrapeptide-7
  • IL-6 inhibition, reduces vascular permeability and inflammation-driven edema
  • RCT: 35% reduction in periorbital puffiness at 8 weeks (J Cosmet Dermatol 2022)
  • Requires liposomal delivery or dimethyl isosorbide. Molecular weight 500 Da
  • Inflammation-driven puffiness, visible capillaries, morning edema that worsens with histamine triggers
  • Most evidence-backed for inflammatory edema. But zero effect on fat pad herniation
  • Acetyl Tetrapeptide-5
  • Promotes lymphatic drainage, reduces glycation end-products in dermal matrix
  • RCT: 10% concentration reduced puffiness vs placebo at 8 weeks, plateaued at 12 weeks (Dermatol Surg 2021)
  • Smaller molecular weight (~400 Da), penetrates with standard carriers
  • Lymphatic stagnation, fluid retention patterns (worse after salt intake or poor sleep)
  • Strong for fluid-driven puffiness. Effect plateaus without concurrent collagen support
  • Copper Peptides (GHK-Cu)
  • Stimulates Type I/III collagen, increases VEGF, promotes dermal remodeling
  • In vitro: 50–70% increase in fibroblast collagen synthesis; limited RCT data for periorbital application
  • Copper ion instability requires chelation or encapsulation
  • Thin, crepey periorbital skin with visible fine lines and volume loss
  • Collagen synthesis is real, but VEGF upregulation can worsen vascular congestion and darkening
  • Argireline (Acetyl Hexapeptide-8)
  • SNARE complex inhibition, reduces muscle contraction (Botox-like effect)
  • No published RCT for under-eye application. Marketed for crow's feet
  • Requires penetration to neuromuscular junction (unlikely with topical application)
  • Dynamic wrinkles from muscle movement. Not applicable to static puffiness
  • Mechanism doesn't address edema or fat herniation. Misapplied in eye bag context