Sagging eyebrows (brow ptosis) usually develop gradually as the skin, soft tissue and supporting ligaments of the forehead lose elasticity with age, allowing the brow to settle lower over the eye socket. A low brow can make the eyes look heavy, tired or hooded. Options range from observation and anti-wrinkle injections for a subtle lift to a surgical brow lift when the descent is more significant.
Where should the eyebrow sit?
There is no single ‘correct’ brow position, but some general patterns help surgeons describe what has changed. In many women the brow sits at or slightly above the bony rim of the eye socket, with a gentle arch peaking towards the outer third. In many men the brow is flatter and sits closer to the rim. With age, the outer (lateral) part of the brow often drops first, because it has less muscular support than the inner part. This produces a heavier, sometimes downturned look at the corners of the eyes even when the eyelids themselves have changed very little.
Common causes of brow descent
Several factors usually act together:
- Ageing tissues: collagen and elastin decline, and the ligaments that anchor the forehead soft tissue to bone slacken.
- Volume change: loss of fat around the brow and temple reduces support beneath the brow.
- Muscle balance: the frontalis muscle lifts the brow, while muscles around the eye and between the brows pull it down; as this balance shifts, the brow can settle lower.
- Genetics: some people inherit a low or heavy brow and notice hooding from early adulthood.
- Sun exposure and smoking: both accelerate skin ageing and loss of elasticity.
- Weight changes: significant weight loss can reduce facial volume and support.
How a low brow affects the eyes
When the brow drops, it pushes skin down onto the upper eyelid. Many people assume they have excess eyelid skin when the real driver is a descended brow; surgeons sometimes call this ‘pseudo-hooding’. A useful self-check is to look in a mirror, relax your forehead, then gently lift the brow with a fingertip to where you would like it to be. If most of the hooding disappears, the brow is likely to be a significant part of the picture.
People with low brows often raise their eyebrows unconsciously throughout the day to clear their field of vision. This constant effort can deepen horizontal forehead lines, and some people find their forehead feels tired by the evening. In more advanced cases, heavy tissue at the outer brow can rest on the upper lid and reduce the upper outer field of vision.
When sagging needs medical assessment
Gradual, symmetrical change over years is typical of ageing. A brow or eyelid that drops over hours or days, especially on one side, is different. Sudden one-sided facial weakness, drooping of the mouth, slurred speech or arm weakness needs an emergency 999 call. A one-sided brow droop that develops over days with facial weakness (for example with Bell’s palsy) should be assessed by a GP or urgent care promptly. A drooping eyelid with double vision or a severe headache also needs same-day emergency assessment.
Non-surgical options
For mild brow heaviness, anti-wrinkle injections placed carefully into the muscles that pull the tail of the brow downwards can allow a subtle lift for several months. This is sometimes described as a ‘chemical brow lift’ and needs to be performed by a qualified prescriber after a face-to-face assessment. Results are temporary and modest, and the treatment cannot remove excess skin. Dermal filler placed beneath the brow or at the temple may restore some support where volume loss is the main problem; see dermal fillers. Brow grooming and make-up can also change how the brow shape is perceived.
Surgical brow lift
A brow lift repositions the brow and forehead soft tissue at a higher, more natural level and secures it while healing takes place. Techniques include an endoscopic approach through small incisions behind the hairline, a temporal (lateral) lift focused on the outer brow, a hairline incision for those with a high forehead, and a direct brow lift with an incision just above the brow hairs in selected cases. The choice depends on your hairline, forehead height, the degree of descent and your priorities. Recovery and risks are covered in the recovery guide and risks and safety pages.
Brow lift, eyelid surgery or both?
Upper blepharoplasty removes excess eyelid skin but does not raise the brow. If the brow is low and only eyelid skin is removed, the brow may even sit lower afterwards, so assessing both areas together matters. Some people need a brow lift alone, some need eyelid surgery alone, and some benefit from a combination. Our brow lift vs blepharoplasty guide explains the differences. Cosmetic surgery is for adults aged 18 and over, and a brow lift costs from £11,500 with the final quote confirmed after assessment; the £150 consultation fee is charged separately.
Frequently Asked Questions
Can sagging eyebrows be fixed without surgery?
Mild descent can sometimes be improved temporarily with anti-wrinkle injections or filler. These cannot remove skin or reposition a significantly low brow, where surgery is usually the more effective option.
At what age do eyebrows start to sag?
It varies widely. Some people notice changes in their late thirties or forties, while others have an inherited low brow from their twenties.
Why is only one eyebrow sagging?
Mild asymmetry is normal and often becomes more noticeable with age. A new or sudden one-sided droop, particularly with facial weakness, should be assessed promptly by a doctor.
Will a brow lift make me look surprised?
A carefully planned brow lift aims to restore a natural brow position rather than an elevated, startled look. Mr Nassab plans the height and shape with you at consultation.
Do you need a brow lift or eyelid surgery?
It depends on whether the heaviness comes mainly from the brow, the eyelid skin or both. A face-to-face examination is the only reliable way to tell.
