Cctg (often referencing copper tripeptide-like or peptide complexes used in cosmetics) is a small peptide-based ingredient marketed to support skin firmness, wound healing, and collagen synthesis. It is generally used at low concentrations in serums and creams as a targeted anti-aging active.
| Reported effect | How often | Notes |
|---|---|---|
Mild skin irritation or stinging | Uncommon | Transient, usually at application site and resolving on discontinuation. |
Contact dermatitis / allergic reaction | Rare | Redness, itching, or rash in sensitized individuals. |
Localized erythema or temporary tightness | Uncommon | Often dose-dependent and short-lived. |
Systemic adverse effects | Very rare | Not typically reported with topical cosmetic use at standard concentrations. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.