Acetyl Tetrapeptide-5 is a specialized synthetic peptide designed to mitigate localized edema and puffiness, specifically around the delicate orbital area. It functions by inhibiting vascular permeability and preventing collagen glycation to maintain tissue elasticity and fluid balance.
- INCI Name:
- Acetyl Tetrapeptide-5
- Chemical/Scientific Name:
- N-Acetyl-beta-alanyl-L-histidyl-L-seryl-L-histidine
- Common Aliases:
- Eyeseryl, Depuffing Peptide
| Category: | Active Substances |
| Source Origin: | Synthetic |
| Comedogenic Rating: | 0 |
| Primary Industries: | Cosmetic, Dermatological |
| Solubility: | Water |
At a Glance: Properties & Effects
| Soothing/Calming: | |
| Anti-Aging/Renewal: | |
| Brightening/Tone: | |
| Formula Stability: | |
| Irritation Risk: |
- Primary Benefits:
- Visibly reduces lower eyelid puffiness and fluid-filled “bags.”
- Improves skin elasticity by preventing the cross-linking of proteins.
- Supports microcirculation to diminish the appearance of vascular dark circles.
- Provides lightweight hydration to the stratum corneum.
- Potential Risks:
- Extremely low risk of contact dermatitis in hypersensitive individuals.
- Requires consistent application to maintain depuffing effects.
Biological Action & Cosmetic Profile
Fluid accumulation in the infraorbital region often stems from increased vascular permeability, allowing liquid to leak into the surrounding interstitial tissue. Acetyl Tetrapeptide-5 disrupts this process by inhibiting the activity of angiotensin-converting enzyme (ACE), which helps regulate fluid pressure and drainage. By stabilizing the microvasculature, the peptide prevents the excessive extravasation of plasma, thereby reducing the physical volume of eyebags.Molecular analysis also highlights its role in preventing the glycation of collagen. Glycation occurs when sugar molecules bind to proteins, creating advanced glycation end-products (AGEs) that cause fibers to become brittle and lose their tensile strength. This peptide acts as a decoy or inhibitor in this pathway, protecting the dermal matrix from premature aging and ensuring the skin under the eyes remains firm rather than saggy.Clinical evaluations have confirmed that topical application leads to a perceptible smoothing of the eye contour. Because the skin around the eyes is significantly thinner than on the rest of the face, the peptide’s ability to reinforce the vascular and structural components is particularly effective. It does not simply “mask” fatigue but addresses the underlying physiological mechanisms of fluid retention.
Broader Applications & Origins
Cosmetic chemists frequently utilize this ingredient in “recovering” treatments designed for post-procedure or high-stress skin. While its fame is rooted in eye care, the anti-edema properties can be beneficial in any formulation targeting facial swelling or poor lymphatic drainage. The synthetic nature of the peptide ensures high purity and batch-to-batch consistency, minimizing the risk of contamination found in botanical extracts.Aqueous systems are the preferred vehicle for this peptide due to its high water solubility. It is typically supplied in a solution containing Glycerin and Butylene Glycol to enhance its penetration through the skin barrier. Formulations ranging from gel-serums to heavy night creams can effectively house the peptide without compromising its stability.
Routine Integration
- Synergies:
- Caffeine: Enhances the vasoconstrictive effect for faster depuffing results.
- Niacinamide: Assists in brightening the under-eye area while reinforcing the skin barrier.
- Sodium Hyaluronate: Provides deep hydration to plump the hollows around the eyes.
- Conflicts:
- No known contraindications with common actives like Retinol or Ascorbic Acid.
Clinical Consensus & Safety
Safety assessments by the Cosmetic Ingredient Review (CIR) and independent dermatological panels categorize Acetyl Tetrapeptide-5 as safe for use in cosmetics. Testing at concentrations up to 10% (of the commercial solution) showed no signs of ocular irritation, sensitization, or phototoxicity. Preservative systems such as Phenoxyethanol and Caprylyl Glycol are usually present in the raw material to maintain microbial stability without impacting the peptide’s efficacy.
Does this peptide work on dark circles?
It is specifically effective against vascular dark circles caused by fluid buildup or poor circulation. If dark circles are caused by hyperpigmentation (melanin), ingredients like Kojic Acid may be more appropriate.
How long does it take to see results?
Clinical studies demonstrate a significant reduction in eyebag volume within 15 to 28 days of twice-daily application. Immediate cooling effects may be felt, but the biological reduction of edema requires consistent use.
Is it safe for use during pregnancy?
Current data suggests this synthetic peptide remains localized in the upper layers of the skin and does not have systemic effects. However, consumers should always consult a physician regarding new skincare routines during pregnancy.