What should you know about Botox for deep forehead lines?

The frontalis muscle lifts the eyebrows and folds the forehead during expression. Repeated movement can make horizontal lines easier to see, and sun exposure, skin ageing and reduced elasticity can make them persist at rest. Botox reduces signals to selected forehead muscles, limiting the movement that creates the crease. Careful dosing matters because the forehead also helps position the eyebrows and upper eyelids. Treatment may soften movement-related lines without erasing every groove or correcting changes in skin texture.

During consultation, show your relaxed face and your full expression so the clinician can assess brow height, eyelid position and existing asymmetry. Mention prior injections, headaches or neuromuscular problems, pregnancy or breastfeeding, allergies and medicines. Ask what degree of movement is expected and whether a staged approach is suitable. Follow the provider's aftercare guidance and avoid rubbing injection sites. More detail is available on [Wrinkles](/symptoms/wrinkles/) and [Botox](/treatments/injectables/botulinum-toxin-injection/).

Contact your provider if brow or eyelid drooping, significant asymmetry, increasing pain, redness or swelling develops. Urgent assessment is needed for trouble breathing or swallowing, widespread weakness, serious vision changes or sudden neurological symptoms. A review can help distinguish an expected temporary change from a problem needing treatment.

Ask how much forehead movement will remain, how brow position may change, what happens if lines persist at rest and which skin-focused options could complement the plan.