PSA: SNAP-8 Is for Topical Use Only SNAP-8 is a topical cosmetic peptide. Regardless of how it is labeled, the vial it comes in, or who is selling it, SNAP-8 was never designed, tested, or validated for injectable use. It is intended for surface-level, topical activity only. Injecting SNAP-8 is reckless and unsupported by science. - SNAP-8 is modeled after SNAP-25 signaling, which involves synaptic/neural pathways. - There is zero injectable pharmacokinetic data. - There is zero systemic safety or toxicology data. - Cosmetic peptides are often synthesized, stabilized, and handled in ways that are not compatible with injection. - “Lyophilized” does not mean “safe to inject.” - There is no known safe injectable dose—period. - If someone claims “it’s fine” or says “people are doing it,” that is not evidence-based practice; it is negligence. This is how people get hurt—and how the entire peptide space gains a bad reputation. Not all peptides are injectable. Some are topical. Some are intranasal. Some are laboratory reagents only. SNAP-8 clearly belongs in the topical category. If you’re unsure about what you’re researching or holding, stop and ask before making assumptions. Do better research. Protect yourselves. Do not inject cosmetic peptides.