EyeSeryl Peptide Booster

EyeSeryl is Acetyl Tetrapeptide-5, a peptide booster used at 1 to 10% in eye formulas for the look of smoother, less puffy under-eyes.

This is a formulation ingredient, not a finished serum. Do not apply it undiluted.

What is in the bottle

INCI: Glycerin, Water (Aqua), Acetyl Tetrapeptide-5

Three ingredients. Supplied as Solution G, preservative-free and paraben-free, in a 0.5 oz blue glass dropper bottle.

Because it contains no preservative, add one to your finished blend — Leucidal Liquid or Leucidal Complete at 2–4% — and keep it refrigerated.

How much to add

Recommended usage rate is 1 to 10%. Using our house rate of 9 drops per 1% per fluid ounce:

Full conversions on the serum booster chart.

What the supplier's research reports

In the manufacturer's clinical testing — 20 women aged 18 to 65 — 70% showed at least a 30% improvement by day 15, and 95% showed improvement by day 60, measured on the appearance of under-eye puffiness.

These findings are the manufacturer's, from their efficacy dossier, and are reproduced here under our licence agreement with them. They describe testing of the raw material rather than of a finished blend, so your result depends on the concentration you use and how consistently you apply it.

How to use it

1. Choose a light eye gel, serum or cream as your base.
2. Add the drops for the percentage you want.
3. Add a preservative at 2–4%.
4. Cap, shake well, and refrigerate.
5. Apply cold, morning and night, patting gently around the orbital bone. Keep it out of the eye itself.

Applying it cold helps. A blend straight from the fridge feels better on tired eyes than one at room temperature.

What to pair it with

EyeSeryl handles the look of puffiness. For the look of under-eye shadows, add Haloxyl at 1–3% to the same formula — the two are commonly used together in eye products.

Storage

Refrigerate on arrival. Preservative-free, so keep it cold and use it within a reasonable window.

For external use only. Cosmetic grade. Do not apply undiluted to skin. Avoid direct contact with the eye. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.