Skin & Cosmetic

Three separately labelled vials spanning a sixtyfold fill range — glutathione at 600 mg, GHK-Cu at 50 mg, SNAP-8 at 10 mg. Only two are white: the GHK-Cu cake is deep blue from its coordinated copper, and a pale one signals under-loaded copper before any assay is run. Both GHK-Cu and glutathione are hygroscopic. SNAP-8 behaves as a standard lyophilized peptide.

Store the sealed tray at -20°C (-4°F) for up to 36 months, with short-term holding at 2°C to 8°C (36°F to 46°F) acceptable. Two components need care beyond the standard schedule: glutathione oxidises on air contact and its free thiol is the functional group, so reconstitute under minimal headspace and use promptly. GHK-Cu must be kept away from chelating buffers entirely — EDTA and similar agents strip the coordinated copper and leave free GHK tripeptide, a different molecule that still reads as pure.

Three components, three separate chemistries with nothing shared between them. GHK-Cu is a copper coordination complex studied against matrix and gene expression endpoints, where the metal is central rather than incidental. Glutathione works through its cysteine thiol as the cell's principal thiol redox buffer and as substrate for glutathione peroxidases — it is a tripeptide but not a signaling one. SNAP-8 is an eight-residue analog of the SNAP-25 amino terminal fragment, studied for its interaction with SNARE complex assembly, the machinery Fasshauer and colleagues classified structurally in 1998.

Yes. Qualified procurement partners can request alternative vial strengths, additional replicates of a single component, unlabeled or private-label presentation, or bulk glutathione at gram quantities for formulation screening. Contact our corporate sales desk with your target composition and kit count to scope the run.

Kits ship in light-blocking, vacuum-sealed secondary packaging with temperature-stability buffers holding the shipment in the frozen or refrigerated range through transit. Each vial retains its individual identity label inside the tray so component traceability survives handling. We ship nationwide across all 50 US states and internationally via express couriers with discrete, border-optimized clearance and full delivery assurance.