What should you know about scowl lines on the forehead?

Scowl lines commonly appear between the eyebrows or extend upward onto the forehead when the muscles used for frowning contract. With time, lines that first show during expression may remain visible while the face is relaxed. Sun exposure, smoking, dry skin, genetics, and natural loss of collagen can make them more noticeable. Their appearance does not usually signal a medical problem. A clinician should examine a mark that is scaly, bleeding, painful, or changing in colour rather than assuming it is a wrinkle.

Daily broad-spectrum sun protection, shade, moisturiser, and avoiding smoking can help limit additional skin ageing. Relaxing the brow and using gentle skincare may improve comfort, although creams cannot stop the underlying muscle movement. Botulinum toxin injection can temporarily reduce activity in selected frown muscles; a qualified clinician should assess facial anatomy, goals, medicines, and medical history first. Possible effects include temporary bruising, headache, asymmetry, or eyelid or brow changes. Results vary and repeat treatment may be needed.

Arrange a routine skin or medical review if a forehead mark changes quickly, crusts, bleeds, becomes tender, or fails to heal. Seek urgent help for sudden facial weakness, severe headache, vision change, or swelling that affects breathing. These symptoms are not typical features of ordinary expression lines.

Ask whether the lines are dynamic or present at rest, which muscles are involved, what alternatives fit your skin and goals, and how long recovery may take. Confirm who will perform any injection and what aftercare or warning signs to follow.