The skin around the eye is the thinnest on the body — only 0.3–0.5 mm — with almost no sebaceous glands and a constant workout from blinking and squinting. It shows age 5–10 years before the rest of the face, yet it is the blind spot most brands ignore: they slap face cream under the eyes and call it an eye product. This guide diagnoses the three real eye concerns, names the actives that actually work at the eye, flags what must never go near it, and shows how to take a compliant line to OEM.

Diagnose first: what kind of eye concern?

"Tired eyes" is not one problem, and this is exactly where most private-label eye products fail. A brand picks a hero ingredient first, then discovers the customer's concern doesn't match it — the serum does nothing visible, the review says so, and the repurchase never comes. Evidence-based formulation starts with stratification: name the exact concern and its type, then choose the active. The wrong active on the wrong type wastes the formula and the launch.

Dark circles — three types

  • Vascular: bluish, from sluggish microcirculation. Target with caffeine 1%–3% (vasoconstriction), plus hesperidin and vitamin K. Recognized complexes such as Eyeliss and Haloxyl bundle these mechanisms.
  • Pigment: brown, from excess melanin. Use niacinamide, VC ethyl ether, tranexamic acid, and arbutin — the same brightening routes as the face, just at eye-safe levels.
  • Structural: a hollow or shadow from bone and fat loss. No topical ingredient fills a dent — this is a cosmetic-procedure conversation, not a cream one.
Honest boundary: if a product promises "fill the tear trough in 7 days," walk away. Structural dark circles are shadow, not pigment, and no serum can rebuild volume.

Eye bags — three types

  • Edema (fluid): the everyday puffiness — caffeine plus a light tightening peptide is the proven one-two.
  • Fat prolapse: a genuine anatomical bulge; surgery, not skincare, is the answer.
  • Laxity: loose, crepey skin — signal peptides and low-concentration retinol esters rebuild firmness over time.

Fine lines — three types

  • Dehydration lines: surface cracks from dryness — hyaluronic acid plus ceramides refill and seal.
  • Expression lines: from repeated squinting — acetyl hexapeptide-8 relaxes the muscle signal, the gentle "topical alternative" to injectables.
  • True wrinkles: settled lines — low-concentration retinyl palmitate, pro-xylane, or recombinant collagen drive repair.

The three hard-currency actives

If you formulate nothing else for the eye, formulate these three, each at a concentration the evidence supports:

  • Caffeine 1%–3% — the de-puff and vascular-dark-circle workhorse. Eye-specific, not a face hero.
  • Acetyl hexapeptide-8 5%–10% — the expression-line relaxer, safe and well-studied around the eye.
  • Recombinant collagen (type III for repair, type I for structure) — moisturizing and barrier-aligned with the eye's thin, dry-prone profile; a repair-plus-firm matrix on its own.

Underpin all three with ceramides 0.1%–1% as the barrier base — the eye's brick wall is fragile and needs it before any active can perform.

Three formats carry these actives. The eye cream is the daily repeat-purchase engine and the highest average order value. The eye mask (patch) is low-commitment and discovery-friendly — ideal for social and short-video launch. The eye serum sits between them with the highest active concentration for shoppers who already trust the category. Most brands lead with the mask, then convert to the cream.

Eye-specific vs. face-general: caffeine, Eyeliss, Haloxyl and retinyl palmitate are chosen because the eye tolerates them. High-strength retinol, pure vitamin C and strong AHAs belong on the face, not the lid. Match the active to the anatomy, not the trend.

Eye cream & eye mask: a four-layer framework

Whether you build a cream or a mask, the same four layers apply: an active-efficacy layer (caffeine / peptides / collagen), a barrier layer (ceramides + light emollients), a sensory layer (a cushiony texture that spreads without tugging), and a safety-stability layer (gentle preservation, eye-appropriate pH). The mask adds an occlusive delivery step; the cream is the daily repeat-purchase engine. Nail the barrier and safety layers first — an eye product that stings loses customers faster than one that works slowly.

Taboos: what never goes near the eye

  • High-concentration pure L-ascorbic acid — too acidic and irritating for the thin lid.
  • Retinol above ~0.1% — the eye needs the gentle ester (retinyl palmitate), not prescription-strength acid.
  • High-strength AHA / glycolic acid — strips an already fragile barrier.
  • Fragrance in the top 10 of the INCI list — a leading cause of eye-area sensitivity; exclude it.

Taking it to OEM: MOQ, sampling, cost, compliance

The eye is a premium segment, but the entry cost is approachable.

  • Minimum order quantity: an eye cream typically opens at 500–1,000 units; an eye mask (patch) at 500–1,000 sheets.
  • Sampling & production: sampling runs 7–15 days; mass production 30–45 days after approval.
  • Indicative cost: an eye cream runs about ¥8–30 per unit (packaging-dependent; vacuum pump or roller-ball tip raises the component cost), and an eye mask about ¥2–8 per sheet. Indicative only.
  • Compliance: for the China market, plan ~30 working days for NMPA filing. For EU/US export, document against EC 1223/2009 and FDA/MoCRA with INCI listings, MSDS, and stability/micro reports.
  • Factory credentials: insist on GMPC / ISO 22716 certification and a valid SC production license, plus third-party QC and a safety assessment report.

Summary

A credible eye-care line starts with diagnosis, not a slogan. Match the concern — vascular, pigment, or structural dark circles; edema, fat, or laxity bags; dehydration, expression, or true lines — to the right active: caffeine and peptides for the daily win, recombinant collagen and ceramides for repair. Keep the forbidden actives off the lid, build on a ceramide barrier, and the OEM step is clean: 500-unit starts, 7–15 day sampling, and a compliance file that travels. Tell us your hero concern and we will match you to a verified factory.