One Eyebrow Higher After Muscle Relaxing Treatment: How to Address It?

One eyebrow sitting higher than the other after treatment. The over-arched “Mephisto” look. Or a brow that feels heavier and lower than before.

It’s one of the most common concerns I see. And one of the most preventable.

The Anatomy

A Constant Muscular Balance

Your brows are controlled by opposing muscle groups.

Frontalis · The Elevator

The only muscle that lifts your brows. Relax it too much, especially unevenly, and the brow drops.

Depressors · The Pulling Forces

Corrugator, procerus, depressor supercilii, and orbicularis oculi pull the brow down and inward. Relax these, and the brow lifts.

Treat one side differently, even slightly, and asymmetry appears.

Why Asymmetry Happens

Uneven Depressor Treatment

More toxin on one side means less downward pull. That brow sits higher.

Uneven Frontalis Dosing

If one side of the lifting muscle is weakened more, that brow drops.

Pre-existing Asymmetry Ignored

Most faces aren’t perfectly symmetrical. Treating both sides identically can exaggerate the difference.

Different Muscle Strength

One side may simply be stronger. Same dose does not mean same effect.

Even a 2mm difference is noticeable to patients.

Brow Too High

Targeted Frontalis Adjustment

Small, precise doses added to the elevated side reduce lift.Results begin in a few days, settling by two weeks.

Brow Too Low

Two possibilities

• If over-treated frontalis → wait for toxin to wear off

• If depressors are relatively stronger → carefully treat depressors to rebalance

Bilateral Reset

The most reliable correctionTreating both sides to re-establish balance can correct asymmetry in the majority of cases.

This works by resetting both lifting and pulling forces to a new equilibrium.

The Protocol That Prevents It

Measurement Over Guesswork

The difference between good and poor outcomes is planning.

• Measured injection points, not freehand placement

• Adjusted heights based on individual brow position

• Different dosing where asymmetry already exists

• Avoiding high-risk anatomical zones

This is how asymmetry is prevented before it starts.

What Patients Should Look For

Green flags

• Full facial assessment before treatment

• Discussion of natural asymmetry

• Clear explanation of injection plan

• Mandatory two-week review

Red flags

• Identical dosing for every patient

• No measurements or markings

• No follow-up offered

• Rushed consultations

Why It Matters

Treatments like anti-wrinkle injections are not simple beauty procedures.

They are precise medical interventions involving muscle balance, anatomy, and millimetre-level accuracy.

When done properly, results look natural and balanced.When done poorly, asymmetry is predictable.

Book your consultation

Precision over guesswork

Learn more: https://www.juvenology.co.uk/anti-wrinkle