“I have bad dark circles” is one of the most common things patients say to me — but very often, what they're actually describing is puffiness, or a combination of both. Since the two have different underlying causes, treating them effectively means understanding which one (or both) you're dealing with.
Dark circles: a pigmentation and blood-flow issue
The skin under the eyes is thinner than anywhere else on the face, which makes underlying blood vessels more visible — this is what creates that bluish or brownish discoloration. Genetics, thinning skin with age, and poor circulation all play a role.
Puffiness: a fluid retention issue
Puffiness happens when fluid pools beneath the eyes, often due to lack of sleep, allergies, sinus congestion, or simply insufficient lymphatic drainage in that area. Unlike dark circles, puffiness is about swelling and fluid, not pigmentation.
Ingredients that address both
- Vitamin K (Phytonadione) — helps strengthen the capillary walls that cause visible discoloration.
- Vitamin A & Vitamin E — support collagen formation and protect against oxidative cell damage.
- Ruscus Aculeatus & Ginkgo Biloba Extracts — support circulation and encourage fluid drainage around the eye area.
- A draining-activity biomimetic peptide — specifically targets the fluid retention behind puffiness and under-eye bags.
This combination is what makes k-One Eye Contour Cream effective for both concerns at once, rather than addressing only one. It's fragrance-free and formulated specifically for the delicate eye area.
When to apply it
Cleanse the skin first, then gently pat k-One around the orbital bone (never directly on the lash line) — preferably at night, when the skin's natural repair processes are most active and fluid tends to accumulate most from the day.