Neuromodulators for Under-Eye Wrinkles
How Neuromodulators Treat Under-Eye Lines
The orbicularis oculi is a circular sphincter muscle that surrounds your eye and controls eyelid closure. The lower portion of this muscle creates the fine crinkle lines you see under your eyes when you smile or squint.
According to PMC (2017) and StatPearls (NCBI, 2023), small doses of 1 to 4 units of neuromodulator can soften lower eyelid crinkle lines by relaxing specific fibers of the orbicularis muscle.
This is one of the most technically demanding injection areas on the face. The under-eye region has thin skin, sits directly over the eye, and has minimal margin for error in dose or placement.
Your lower eyelid depends on the orbicularis muscle for tone and support. Too much relaxation can cause the lower lid to sag or pull away from the eye, a condition called ectropion or lagophthalmos (incomplete eyelid closure).
Providers use very small doses, typically 1 to 2 units for the pretarsal orbicularis (the muscle band closest to the lash line), to soften wrinkles while preserving the muscle function that keeps your lower lid in position.
A small dose trial at your first treatment lets your provider assess how your muscles respond before committing to a full treatment dose.
Treatment of under-eye wrinkles with neuromodulators is typically off-label. FDA approvals for periorbital treatment cover crow's feet (lateral to the eye), not the lower eyelid directly below the eye.
Off-label use is common and legal in medical practice. Your provider uses clinical judgment and published evidence to guide treatment in areas without specific FDA approval.
Results for under-eye treatment are more subtle than crow's feet treatment. Your provider discusses realistic expectations during your consultation.
What to Expect from Treatment
Your provider examines your lower eyelid muscle tone, skin elasticity, and the pattern of your under-eye wrinkles before treatment. You will be asked to smile and squint so your provider can see which muscle fibers are creating the lines.
Injections are placed superficially into specific muscle fibers using a fine needle. The entire treatment for the under-eye area takes about 5 minutes per side.
Your provider may treat the under-eye area as part of a comprehensive periorbital treatment that includes crow's feet and possibly the frown lines and forehead.
According to a 2011 study in PMC, neuromodulator effects appear within 3 to 4 days, with full results visible by 2 weeks. 97.7% of patients see significant improvement by day 30.
Under-eye results are subtle compared to crow's feet or frown line treatment. You will notice a softening of the fine crinkle lines rather than a dramatic smoothing. Duration is 3 to 4 months.
Your provider evaluates your results at two weeks and adjusts future treatments based on your response.
Under-eye wrinkles often coexist with other concerns like dark circles, hollowing, or excess skin. Your provider may recommend combining neuromodulator treatment with fillers for volume restoration, laser resurfacing for skin texture, or topical retinoids for skin quality.
Each treatment targets a different aspect of under-eye aging. A combination approach produces more comprehensive improvement than any single treatment alone.
Your provider stages treatments to maximize results while keeping you safe.
Under-eye wrinkle treatments fall into several categories, and neuromodulators address only one type of concern. Dynamic crinkle lines from muscle movement respond to neuromodulators. Static wrinkles etched into the skin respond better to laser resurfacing or chemical peels.
Dark circles from pigmentation or blood vessels need topical brighteners, laser treatment, or light-based therapies. Hollowing and volume loss respond best to hyaluronic acid fillers placed in the tear trough.
Your provider evaluates which of your under-eye concerns will respond to neuromodulators and which need other treatments, creating a plan that addresses your complete picture.
Safety Considerations for Under-Eye Injections
According to StatPearls (NCBI, 2023) and a 2016 study in PMC, placement too close to the lacrimal gland (above the outer corner of the eye) can worsen dry eye. Lower lid injections carry the risk of lagophthalmos (incomplete lid closure) if the dose is too high.
Over-treatment of the lower orbicularis can cause the lower eyelid to become 'too smooth,' creating an unnatural appearance or allowing the lid to pull downward.
These risks are why under-eye neuromodulator treatment requires an experienced provider who understands the precise anatomy and conservative dosing needed for this area.
Patients with pre-existing dry eye, reduced lower eyelid tone (laxity), or a history of eyelid surgery should discuss these conditions with their provider before under-eye treatment. These factors increase the risk of lower lid complications.
If your lower eyelid snaps back slowly when pulled down (the 'snap-back test'), your muscle tone may not support neuromodulator treatment safely. Your provider performs this test during your evaluation.
Patients with significant under-eye skin excess or fat herniation (bags) may get better results from surgical options like lower blepharoplasty rather than neuromodulator injection.
The under-eye area demands precise anatomical knowledge that goes beyond general injection training. Ophthalmologists and oculoplastic surgeons spend years studying the muscles, nerves, and structures around the eye.
This expertise translates to safer injection placement, appropriate dosing, and better ability to manage any complications. Providers who specialize in the periorbital area understand how small adjustments in dose or placement affect outcomes.
Ask your provider about their specific experience with under-eye neuromodulator treatment and how many they perform.
Under-Eye Neuromodulator Questions
Lower lid drooping is a risk if the dose is too high or the injection is placed too deep. Experienced providers use conservative doses of 1 to 2 units and superficial placement to minimize this risk. A trial dose at your first treatment lets your provider gauge your response safely.
Crow's feet injections target the lateral orbicularis muscle at the outer corner of the eye with higher doses (8 to 12 units per side). Under-eye injections target the lower orbicularis directly below the eye with much smaller doses (1 to 2 units). The under-eye area is more sensitive and requires more precision.
Neuromodulators treat wrinkles caused by muscle movement, not puffiness or bags caused by fat herniation. Under-eye bags are best addressed with filler (for mild cases) or lower blepharoplasty surgery (for moderate to severe cases). Your provider can recommend the right treatment for your specific concern.
Like other neuromodulator treatments, under-eye results last 3 to 4 months. Some patients find that the under-eye area requires retreatment slightly sooner because the doses are so small. Your provider establishes a retreatment schedule based on your response.
Dry eye patients should discuss their condition with their provider. The under-eye area is close to structures involved in tear production, and treatment can affect tear film stability. Your provider may adjust the technique or recommend managing dry eye before proceeding.
Many patients find subtle smoothing of under-eye crinkle lines creates a more rested, refreshed appearance. The results are not dramatic, but they complement other periorbital treatments well. Your provider shows you what to expect during your consultation.
Explore Under-Eye Neuromodulator Treatment
If fine wrinkles under your eyes bother you, your eye doctor or oculoplastic surgeon can evaluate whether neuromodulator treatment is appropriate for your anatomy and goals. Schedule a consultation to discuss this specialized treatment option.