What should you know about deep frown lines?

The muscles used for frowning, concentrating and squinting pull the brows inward. Repeated contraction can leave lines visible when the face is relaxed. Sun exposure, dryness and normal ageing can make the overlying skin less flexible. The depth does not by itself show how worried, tired or angry someone is.

A clinician looks at the lines while you relax and make expressions. This helps identify how much of the appearance comes from muscle movement and how much comes from a settled crease.

Use sun protection, sunglasses in bright conditions and a gentle moisturiser to support the skin. Botulinum toxin injection may reduce selected muscle activity and is commonly considered for movement-related glabellar lines. Dermal fillers act differently and may be discussed only after an anatomical assessment of whether added support is appropriate.

Choose a qualified medical professional who can explain facial balance, possible asymmetry, temporary swelling or bruising, and the aftercare plan. Do not use an online image or a friend’s result as a substitute for an examination.

A line that suddenly changes, becomes painful, bleeds, crusts or develops a persistent rash should be examined. Seek urgent help for sudden facial drooping, weakness, speech trouble, confusion or a new vision problem; these are not ordinary features of frown lines.

Ask whether the lines are dynamic or fixed, how treatment may affect your brow movement, which alternatives fit your anatomy, and what symptoms after treatment need prompt review.