Which Actives Belong in a K-Beauty Eye Cream? Eye-Area Limits & Tests

Eye cream had a loud 2026. In July, Korea's Financial News reported a Prime Day win for Dongkook Pharmaceutical's Centellian24. Its 360 Shot PDRN Lifting Eye Cream reached the top of Amazon's US best-seller list for eye treatment creams (Financial News, July 13, 2026). In September, The Ordinary launched an eye cream built on a biotech-derived "Lacto-PDRN" and folic acid (The Ordinary launch page).

Both launches lead with an active. For a founder adding an eye product to a line, the active is the last call, not the first. The skin is thin, product drifts into the eye, and US rules treat the eye area as its own zone. Below: the limits in the order to settle them, an active map by concern, and the brief to send your Korean lab.

What Makes the Eye Area Different From the Rest of the Face?

The eye area is a regulated zone, not just a sensitive one. In US rules, the area of the eye refers to the zone inside the bony ridges above and below the eye, per 21 CFR 70.3(s). It includes the eyebrow, the eyelids, the lashes and the eye itself. Anything applied there must meet that zone's color rules.

Three practical facts follow. Eyelid skin is thin and reacts quickly to irritants. Creams warm up on the skin and travel, so a runny texture ends up in the tear film. And people apply eye products every day, close to open eyes, often with a fingertip. That is why an eye formula usually runs gentler and plainer than the face serum in the same line.

The Eye Cream Active Map, Concern by Concern

Four concerns drive most eye products: puffiness, fine lines, dark-looking skin and dryness. Each has a short list of actives that suit thin skin, and the evidence behind them varies. Use the map to choose one or two actives per product.

Each row has a deeper guide. Peptide choice is in the copper peptide vs palmitoyl vs Argireline decision matrix. Retinoid strength and stability are in the retinol and retinal manufacturing guide, and brightening options in vitamin C derivatives compared. One calming botanical can round out the base; heartleaf is a common Korean pick, covered in the heartleaf (Houttuynia cordata) ingredient guide.

How Much Can an Eye Cream Do for Dark Circles and Hollows?

A cream can lighten the look of superficial discoloration. It cannot refill a hollow. A systematic review in Dermatologic Surgery matched under-eye treatments to their causes and found chemical peels and topicals effective for superficial dyschromia (Beer et al., 2026). Fillers remain the base treatment for volume loss, and surgery is preferred for herniated fat.

Dark circles have several causes: pigment, visible blood vessels, thin skin and shadows from lost volume. An earlier review of 30 years of topical studies, in the same journal, concluded that topicals can be effective for periorbital dyschromia (Woolhiser et al., 2025). It asked future trials to match treatments to the cause. Caffeine, vitamins and growth factors were among the ingredients in the studies it covered.

For a brand, that sets the brief. Target the look of pigment-type darkness, dryness and fine lines. A film former can give a temporary tightening effect, and the copy should call it temporary. Promising to fill hollows sets up returns and claim trouble.

Four Ingredient Groups to Lower or Leave Out Near the Eyes

Eye formulas usually run lower in strength and simpler in ingredients than face formulas. Check these before the sample round:

• Retinoids: if the line has a retinal serum, the eye version usually takes a lower strength or a gentler ester, plus a slower start in the directions.
• Exfoliating acids: AHA and BHA levels that suit the cheeks can sting the lids. Keep them in the face products.
• Fragrance and essential oils: they add irritation risk and no function. Leave them out.
• Menthol and other cooling agents: they can sting near the eye. A metal applicator tip gives the cool feel without them.

Then the texture. A cream that melts at skin temperature, or an oil-rich balm, can creep into the eye. Ask the lab for a texture that sets on the skin, and test each sample on the lower lid before you approve it.

Which Colors Can Go in an Eye Cream Sold in the US?

Only color additives that FDA has listed for use in the area of the eye. Under 21 CFR 70.5(a), a color listing or certification does not cover eye-area use unless it says so specifically. A color approved for cosmetics in general can still be off limits in an eye product.

This matters most for tinted and color-correcting eye creams, which rely on pigments and pearls to brighten the look of dark circles. FDA's eye cosmetic safety page notes that a number of colors approved for general cosmetic use are not approved for the area of the eye. Check every color against FDA's list of permitted uses, including colors that arrive inside a supplier's pre-mixed base.

Colors are a known reason eye cosmetics get stopped at the border; the import alert patterns are in why FDA detains Korea-made cosmetics. Lips have a parallel rule, explained in the K-beauty lip treatment development guide.

Eye Tests and Containers That Keep Daily Use Safe

Two kinds of testing matter for eye products. An in-use study under ophthalmologist supervision is what an "ophthalmologist tested" claim stands on. In vitro eye irritation screens flag irritation risk earlier, without testing on live animals. Two common ones are OECD Test Guideline 492 (reconstructed human cornea-like epithelium) and Test Guideline 437 (bovine corneal opacity and permeability).

No US rule defines "ophthalmologist tested", so the phrase is only as good as the study behind it. The FTC expects health-related claims to rest on competent and reliable evidence (FTC Health Products Compliance Guidance). Keep the protocol, the panel description and the ophthalmologist's report on file. HRIPT, the patch test behind "dermatologist tested", covers skin only; the differences are in HRIPT vs clinical vs consumer testing.

Then the container. A jar invites a fingertip into the product every day, while tubes and airless pumps keep the bulk sealed. A metal tip touches the skin directly, so it needs a shape that wipes clean. FDA warns that misused eye cosmetics can grow bacteria or fungi that cause infections. Whatever you choose, the preservative system has to pass a challenge test in the final container; how to read that report is in reading ISO 11930 and stability reports.

How Should Eye Cream Claims Read in the US?

Describe how the eye area looks, not what the product changes in the body. FDA decides cosmetic versus drug by intended use. Its examples of drug claims include products that "regenerate cells" or change melanin production (FDA: Is It a Cosmetic, a Drug, or Both?).

So "reduces the look of puffiness", "dark circles look lighter" and "fine lines look smoother" read as cosmetic. "Boosts collagen", "repairs sagging" or anything that echoes an injectable result reads as a drug claim. Note how The Ordinary's launch copy qualifies its promises with "visibly" and "appearance".

Many Korean eye creams carry MFDS functional cosmetic status for wrinkle improvement, often built on adenosine or retinol. That status has no legal meaning in the US, so the wrinkle line on the Korean carton needs a US rewrite; background is in the adenosine ingredient guide. Add SPF and the product becomes an OTC sunscreen drug in the US. Read the Korean sunscreen OTC monograph playbook before you plan a day eye cream with SPF.

The Eye Cream Brief for Your Korean ODM

A good brief fits on one page and answers five things: concern, texture, container, tests and claims. Send it before the first sample so the lab formulates inside your limits instead of reworking later.

Frequently Asked Questions

Can I sell my face serum as an eye cream?
Only if the formula suits the eye area. It has to be gentle enough for thin skin, free of colors not listed for eye-area use, and tested for that use. Relabeling a face serum without those checks adds safety and compliance risk.

Do I need an ophthalmologist test to sell an eye cream in the US?
No US rule requires one. You need it if you plan to say "ophthalmologist tested" or something similar, because the claim must be true and supported. MoCRA still requires adequate substantiation of safety for every cosmetic product.

Is a PDRN eye cream a drug in the US?
Not because of the ingredient alone. The claims decide it. "Fine lines look smoother" stays cosmetic, while "regenerates skin" or injection-style promises push the product toward drug status.

Can a Korean eye cream with SPF be sold in the US as a cosmetic?
No. In the US, a product with an SPF claim is an OTC sunscreen drug and must follow the sunscreen monograph and Drug Facts labeling. The simpler route is an SPF-free eye formula plus a separate sunscreen.

By Liz Song, K-beauty sourcing consultant.