Peer-reviewed evidence.
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Research summaries on the compounds, delivery science, and regulatory context behind HelioMend formulations. Every claim cites the underlying publication.
GHK: The Tissue Architect
GHK is a tripeptide present in human plasma at concentrations that decline with age — from approximately 200 ng/ml at age 20 to 80 ng/ml by age 60. Published research documents its modulation of over 4,000 human genes, including collagen synthesis pathways, antioxidant response elements, and DNA repair signaling. This review synthesizes the peer-reviewed evidence base.
Compound ReviewKED: The Vascular Bioregulator
KED is a tripeptide vascular bioregulator with documented effects on endothelial cell function. Published research describes its role in connexin 43 gap junction restoration, endothelin-1 normalization, SIRT1 upregulation, and synergistic action with GHK on the endothelial nitric oxide synthase (eNOS) pathway.
Compound ReviewAEDG: Telomerase Activation and the Longevity Signal
AEDG is a tetrapeptide bioregulator with published research documenting hTERT upregulation, pineal gland bioregulation, epigenetic clock modulation, and significant reduction in all-cause mortality across multi-year human cohort studies. A 2025 peer-reviewed study from Brunel University London confirmed hTERT upregulation in human cells.
Delivery ScienceTransdermal Delivery and the 500 Dalton Rule
The 500 Dalton Rule defines a molecular weight threshold below which compounds achieve passive transdermal penetration of intact stratum corneum. GHK (340 Da), KED (390 Da), and AEDG (432 Da) all fall below this threshold. Ethoxydiglycol (Transcutol) further enhances delivery efficiency.
ComparisonBioregulator Peptides vs Topical Retinol
Topical retinoids and bioregulator peptides are often grouped under 'anti-aging skincare' but operate through fundamentally different mechanisms. Retinoids act on retinoic acid receptor pathways with documented irritation and barrier-disruption profiles. Bioregulator peptides modulate gene expression through receptor-independent and direct DNA-binding mechanisms with different tolerability characteristics.
Research LineageThe Khavinson Lineage: 50 Years of Bioregulator Research
The St. Petersburg Institute of Bioregulation and Gerontology, founded by Vladimir Khavinson, has produced over 800 peer-reviewed publications on short-chain peptide bioregulators since the 1970s. The body of work spans organ-specific peptide bioregulators, age-related decline modeling, and longevity outcomes in human cohorts.
RegulatoryWhy Non-Copper GHK?
GHK and GHK-Cu are often discussed interchangeably in popular skincare content, but they are distinct chemical entities with different regulatory profiles. HelioMend formulations use non-copper GHK. This article reviews the distinction and the regulatory status of each form.