Acetyl tetrapeptide-5
is used in cosmetic eye formulations to decrease puffiness, eye bags, and dark circles by reducing edema and protecting proteins such as SOD from glycation
Alanine
Ala / A · hydrophobic residue · neutral charge
AOD-9604
is studied as an anti-obesity peptide that can reduce weight gain and increase fat oxidation in obese animal models with generally neutral effects on IGF-1 and glucose metabolism in early human trials
Arginine
Arg / R · basic residue · positive charge
Argireline
is a topical cosmetic peptide reported to decrease dynamic wrinkles by partially mimicking the mechanism of botulinum toxin in a non-invasive manner
Asparagine
Asn / N · polar residue · neutral charge
Aspartic acid
Asp / D · acidic residue · negative charge
BPC-157
is investigated for accelerating healing of gastrointestinal mucosa, tendons, ligaments, bone, and nervous tissue in preclinical models, with anti-inflammatory and pro-angiogenic effects
Comparison
While GHK-Cu acts as a tissue-remodeling and wound-healing signal, enhancing skin regeneration, angiogenesis, and repair while reducing inflammation and oxidative damage in experimental models31383, Hexarelin is investigated for effects on GH secretion, cardiac protection, and muscle metabolism, with higher GH secretory potency than earlier GHRPs1929.
While GHK-Cu works as an endogenous tripeptide, Gly-His-Lys, that chelates Cu²⁺ and modulates gene expression, stimulating collagen, elastin, proteoglycan, and glycosaminoglycan synthesis while exerting antioxidant and anti-inflammatory effects31383, Hexarelin is a potent synthetic hexapeptide (examorelin) that agonizes GHSR-1a to stimulate GH release and also binds CD36, influencing cardiovascular and metabolic pathways19212996.
GHK-Cu
Not assigned in the current dataset.
Hexarelin
GHSR
GHK-Cu and Hexarelin are noticeably different, with limited direct overlap in their usual biological context. Their typical research and application settings separate fairly clearly: GHK-Cu is more often discussed in the realm of Dermatology and aesthetics and Aging and longevity, whereas Hexarelin is more often associated with the realm of Metabolic and endocrine and Cardiovascular health. They also influence different molecular systems, with GHK-Cu tracking more closely to Extracellular matrix proteins while Hexarelin centers more on Ghrelin receptor. GHK-Cu has a more natural endogenous origin, while Hexarelin is closer to synthetic design background and their development context also differs, with GHK-Cu cosmetic grade while Hexarelin is in Preclinical development. Hexarelin incorporates d-amino acid substitution and amidation features that are not part of GHK-Cu.