Periorbital Assessment · Skin Layer · CityLink Mall
Fine lines and crepey texture under the eye are a dermal problem in the thinnest skin on the body. They are not a volume deficit, and filling them is the most common reason under-eye treatment goes visibly wrong.
Lower eyelid skin is the thinnest skin on the body. It has a shallow dermis, a sparse population of sebaceous glands, and a subcutaneous layer so minimal that in many people the orbicularis oculi muscle lies almost directly beneath the dermis with nothing meaningful in between. Elsewhere on the face, muscle movement is buffered by fat and thick dermis before it reaches the surface. Here, there is nothing to buffer it.
That muscle never stops. The orbicularis oculi is a sphincter surrounding the orbit, and it contracts with every blink, every squint, every smile and every reaction to bright light. Singapore supplies a great deal of bright light. Each contraction gathers the lid skin into fine folds running perpendicular to the muscle fibres, which is why the lines radiate outward from the lateral canthus and run roughly horizontally beneath the lid.
Dermal decline converts repetition into permanence. Collagen density falls, elastin fragments under cumulative ultraviolet exposure, and the glycosaminoglycan content that holds water within the dermis diminishes. Skin that used to spring flat after each fold begins to hold the fold. The texture that patients describe as crepey — a fine, papery, multi-directional crinkling visible in raking light — is the visible expression of a dermis that has lost both its scaffolding and its water.
Volume loss elsewhere then exaggerates what is already there. As the midface descends and the tissue over the orbital rim deflates, the lid skin is left with less to lie over and less tension across it. The lines themselves have not deepened, but slack skin folds more readily and casts more shadow. This is why under-eye lines often appear to worsen suddenly in a period when the skin itself has changed very little — the support beneath it changed instead.
Types
Lower lid lines fall into three patterns, and the examination that separates them takes less than a minute. The face is examined at complete rest, then on full smile, then with the midface manually supported upward — and what the lines do at each stage decides which layer is treated.
Under-eye lines are skin. The moment they are treated as a volume deficit, the treatment starts producing new problems instead of solving the original one.
What Changes
Hyaluronic acid placed beneath lower lid skin behaves unlike hyaluronic acid anywhere else on the face, and for reasons that are entirely predictable from the anatomy. Under a dermis this thin, a superficial deposit is visible as a ridge in side lighting. It also scatters light: the Tyndall effect gives superficially placed product a bluish-grey cast that looks remarkably like a dark circle, which means the treatment can produce the exact appearance the patient came in to resolve.
The region is also lymphatically slow. Hyaluronic acid is strongly hydrophilic, and in a compartment with limited drainage this can produce persistent puffiness and malar oedema that appears weeks after the treatment and lasts far longer than the patient was told any swelling would. None of this makes under-eye injection wrong — well-placed, deep, conservative volume for a genuine tear trough hollow is a reliable treatment. It makes it wrong for lines.
The skin component is therefore treated as skin. Dermal regeneration raises collagen and dermal thickness in a region that has very little of either; bio-remodelling improves the water-binding capacity that gives the surface its smoothness; fractional resurfacing remodels the folds themselves. These are slower than a syringe and they do not produce an immediate change on the day, which is exactly why they are so often skipped in favour of the thing that does.
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Atelier Aesthetics · Owned by AYA
1 Raffles Link, #B1-28, CityLink Mall, Singapore 039393 · +65 8023 7170
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