In short. Under the fascia the change is structural; above it the result is a soft pad. One layer of tissue separates two different faces, and the choice is made first.
Key points
- Before agreeing, ask whether the plan places the material beneath the fascia or above it, and what that choice is expected to change.
- Ask also what would happen if the same amount went into the other plane.
- A clinician who can answer both is describing a plan rather than a product, and the answer tells you what to expect at four weeks.
In most parts of the face, depth changes how long a result lasts and how the surface looks. In the temple it changes what the result is. There is a fascia layer over the temporalis muscle, and the space beneath it is a deep compartment with structure behind it; the space above it is skin and subcutaneous tissue with no structure behind it. The same substance on either side of that layer produces two different faces.
Beneath the fascia
Material placed in the deep compartment sits against the muscle, in the fat pad over it, or against the bone of the fossa. There is structure behind it, so it restores a frame rather than filling a space. The change reads as contour: the slope from the outer eye to the hairline returns, the orbital rim stops being a step, and the upper face widens in the view where that is visible. Because the compartment is deep and moves little, the material is cleared slowly and the change lasts longer than it would in the lip or the cheek.
Above the fascia
Material placed above the fascia sits in skin and subcutaneous tissue with no structure behind it. It produces fullness rather than contour: the skin is lifted away from the deep plane, the temple looks padded rather than restored, and the change moves with the skin when the face moves. It is a legitimate technique for a small refinement or for skin that has thinned, and not the same operation as restoring the frame even when the same substance is used.
Why this is the first question
A patient who is promised a structural change and receives a soft pad has been given a result that is competent and not the one they agreed to. This is the commonest misunderstanding in this area, and it is not solved by using more material, because more material above the fascia produces a larger soft pad rather than a frame.
Ask which plane, and what it changes
Before agreeing, ask whether the plan places the material beneath the fascia or above it, and what that choice is expected to change. Ask also what would happen if the same amount went into the other plane. A clinician who can answer both is describing a plan rather than a product, and the answer tells you what to expect at four weeks.
Reasons to stop and ask again
- You have been told the depth does not matter, or that the result is the same either way.
- The plan promises a structural change and describes a superficial placement.
- More material is proposed as the answer to a result that reads as a pad rather than a frame.
What the deep placement navigates around is set out in Vessels, Nerves and the Temple Danger Zone, and how the two planes behave afterwards is described in Temple Filler: Swelling, Settling and the Weeks Between.
Frequently asked questions
How can the same substance produce two different results in the temple?
Because the temple has a fascia layer over the temporalis muscle, and the material behaves differently on each side of it. Beneath the fascia it sits in a deep compartment against structure and the change reads as contour that lasts. Above it, it sits in skin and subcutaneous tissue and the change reads as fullness that moves with the skin.
Which depth is better?
Neither, in the abstract. The deep plane is chosen when the aim is to restore the frame, and the superficial plane is used for a small refinement or for skin that has thinned. The problem is not which one is better but which one is being described: a plan that promises a structural change and delivers a soft pad has answered a different question.
Does deeper placement mean more risk?
It means a different risk. Going deep passes close to the deep temporal vessels and to the plane the nerve travels in, and the tissue is not visible from the surface. Staying superficial avoids some of that and produces a different result. Depth is a trade-off between what the result reads as and what has to be navigated, not a safety setting.
Risks & Limitations
- The temple is crossed by named vessels in a small space: the superficial temporal artery and its branches, the vein known as the sentinel vein near the outer orbital rim, and the deep temporal vessels beneath the fascia. Material entering an artery can travel, and because the frontal branch of the superficial temporal artery communicates with the vessels around the eye, skin loss and — rarely — loss of vision are possible. This is time-critical rather than cosmetic.
- The temporal branch of the facial nerve crosses the same region on its way to the brow. If it is affected the brow will not lift on that side. Most such weakness improves over weeks to months, and a proportion does not recover fully, which is why the way the brow lifts is recorded before treatment rather than only examined afterwards.
- Deep placement beside the temporalis muscle is commonly followed by a dull pressure headache that settles over a day or two, and by an ache on opening the mouth wide or chewing hard. A headache that is severe, one-sided in a new way, or worsening after the first days is not ordinary recovery and should be assessed.
- Adding volume to the temple does not lift a brow that has descended. It fills the shadow beneath the brow tail and changes how the upper face reads, and the position of the brow is unchanged. Where the distance between brow and eye is the complaint, the answer is an operation rather than an injection.
- Swelling and bruising, firmness and small lumps in the first weeks, asymmetry, nodules and delayed inflammatory reactions can occur. Every result is temporary, the material is not fully cleared between sessions, and only the reversible class can be broken down at all.
When to Seek Care
- Any change in vision, including blurring or a patch of lost sight — seek emergency care immediately.
- Severe pain out of proportion to the injection, or pain that is worsening rather than settling.
- Skin turning white, grey, mottled or dusky anywhere near the treated temple, the forehead or the eye.
- A brow that will not lift on one side, or a headache that is severe or worsening after the first few days.
- Swelling that is increasing after the first few days rather than settling, or fever with spreading redness, warmth or discharge.
References & Further Reading
- American Society of Plastic Surgeons (ASPS) — procedure and safety guidance
- National Institute for Health and Care Excellence (NICE, UK) — relevant guidance
- Cochrane Library — systematic reviews
- Chinese Medical Association Plastic Surgery Branch — clinical guidance
This page is patient education, not medical advice, and it does not cite individual studies. Discuss your own case with a qualified clinician. To arrange an assessment at Chongqing West District Hospital, see Contact & Consultation.