Look at the eye-cream shelf in almost any European pharmacy and two words keep coming up: vitamin A (or retinol) and peptides. Peptide eye creams are often presented as the gentler "retinol alternative" — so if you're choosing a product for fine lines, tired-looking skin or puffiness around the eyes, it's a fair question: which one makes more sense, and do you actually have to pick?
This guide compares the A313 Eye Serum, a vitamin-A serum made for the eye contour, with peptide eye creams in general — honestly, and without pretending one is a replacement for the other.
What peptides are, and what they're used for
Peptides are short chains of amino acids, the building blocks of proteins. In skincare they're roughly grouped by what they're designed to do:
- Signal peptides (for example palmitoyl pentapeptide-4) are meant to act as messengers that encourage the skin's own renewal processes.
- Carrier peptides, such as copper peptides, deliver trace minerals to the skin.
- "Expression-line" peptides (such as acetyl hexapeptide-8) are studied for their effect on the look of lines that form when you squint or smile.
Peptides are generally very well tolerated, which is a big part of their appeal around the eyes. The honest caveat: much of the research is small-scale and often funded by ingredient suppliers, and results depend heavily on the specific peptide, its concentration and the overall formula.
How a vitamin-A eye serum is different
Vitamin A works in a different way. Retinoids are among the most extensively studied ingredients in skincare, and cosmetic forms of vitamin A are used to support the skin's natural renewal and a smoother-looking texture over time. The A313 Eye Serum brings vitamin A into a lightweight serum designed for the thinner skin of the eye contour, with its label focusing on three classic concerns: wrinkles, dark circles and bags.
The trade-off is tolerance. Vitamin A can cause temporary dryness, tightness or flaking while skin adjusts, and the eye area is more reactive than the rest of the face. That's why it's usually introduced slowly and used in the evening.
Side by side: the practical differences
- Research base: vitamin A has decades of research behind it as an ingredient family; peptide research is younger and more fragmented.
- Tolerance: peptides are rarely irritating; vitamin A may need an adjustment period.
- Time of day: peptides can be used morning and night; vitamin A is best kept to the evening.
- Sun care: with vitamin A in your routine, daily SPF becomes more important.
- Replacement or partner? Peptides aren't a like-for-like substitute for vitamin A — they simply do a different job. For people who can't tolerate vitamin A at all, they're a reasonable option.
Can you use both?
Yes, and many people do. Peptides and vitamin A aren't known to clash, so a simple split works well: a peptide eye cream in the morning, the A313 Eye Serum in the evening. If your peptide product is a richer cream, it can also go on top of the serum on evenings when your skin feels dry.
How to use the A313 Eye Serum
- Use it in the evening, on clean, completely dry skin.
- Take a very small amount and gently pat it along the orbital bone with your ring finger — don't rub or tug.
- Keep it off the eyelids and away from the lash line and the eyes themselves.
- Start every second or third evening and increase gradually as your skin gets used to it.
- If the area feels dry, follow with a simple, fragrance-free moisturiser or your peptide cream.
- Apply sunscreen every morning.
When to ask for advice
If you have very sensitive skin, eczema or a history of reactions around the eyes, patch-test first and speak to a pharmacist or skincare professional before starting. The same applies if you're pregnant or breastfeeding, or if you're using other prescribed treatments — especially prescription retinoids. Stop using the product if you notice persistent redness, stinging or swelling, and rinse with water if any gets into your eyes. Puffiness or dark circles that appear suddenly, or affect only one side, are worth checking with a doctor or pharmacist.
The bottom line
Peptides and vitamin A aren't rivals so much as two different tools. If you'd like a well-researched ingredient for the eye contour and are happy to introduce it slowly, a vitamin-A serum like the A313 Eye Serum is a natural choice. If your skin is very reactive, peptides are a gentle place to start — and once you're comfortable, combining the two makes for an easy, low-fuss routine.
