Known, unknown, and estimated
- Known: the exact product, formulation, route, event, supply, and observation entered into the record.
- Known: a published review discusses GHK-Cu in skin remodeling and related research contexts.
- Unknown: a suitable human pharmacokinetic half-life, exact systemic exposure, and the clinical meaning of a logged observation.
- Estimate: any optional model input remains a user-selected assumption, not a measured or established human concentration.
Why GHK-Cu needs an identity-first tracker page
Search intent around GHK-Cu and copper peptides mixes topical cosmetic products, research discussions, and systemic claims. Those are not interchangeable contexts. A useful tracker preserves the exact product label and route rather than collapsing every record into a generic “GHK-Cu dose.”
The GHK-Cu record to preserve
Product identity
Brand or source label, formulation, concentration as stated, and source document.
Route-specific event
Keep topical application and any other route as separate record types.
Supply history
Track container or vial identity, start date, events, and remaining estimate.
Observation log
Preserve timestamped observations without converting them into efficacy claims.
Why no default human half-life should be implied
The cited GHK-Cu review is useful for research context, but it is not a human pharmacokinetic study establishing a route-specific half-life, Tmax, or exposure curve. A responsible tracker keeps the human value unknown unless a suitable source is documented.
Cosmetic presence is not FDA pre-approval
In the United States, FDA generally does not pre-approve cosmetic products or ingredients other than certain color additives. Product claims and intended use affect how a product is regulated. A tracker should record the product as labeled without treating marketplace availability as proof of an approved systemic therapy.
Sources: Pickart et al. GHK-Cu review, FDA cosmetics and U.S. law, and Halflife App Store listing.
Keep the complete record in one place
Halflife - Peptide & GLP-1 Log organizes logs, schedules, vial inventory, injection sites, symptoms, and clearly labeled model estimates on iPhone.
Download Halflife - Peptide & GLP-1 Log