What should you know about vertical lines on forehead from sleeping?

Pressure from a pillow or a sleep position can fold the skin during the night. A mark that fades after you wash, moisturise or move around is more consistent with a temporary sleep crease. If the line remains through the day, repeated facial expressions and normal changes in skin support may be contributing as well.

The direction and location of a line do not prove that sleeping caused it. Dry skin can make a temporary crease look sharper, while squinting or lifting the brows may maintain forehead lines independently of sleep.

Use a gentle moisturiser after cleansing, protect the forehead from daily sun exposure and avoid aggressive rubbing. Notice whether the mark fades and whether it appears in the same place each morning. A comfortable sleep position is preferable to forcing a posture that disturbs rest.

If the line stays visible and bothers you, a qualified clinician can assess whether muscle movement is involved. Botulinum toxin treatment may be discussed for selected movement-related lines after a facial examination; it is not a way to correct every pressure mark.

Arrange medical advice if a forehead change is sudden, persistent and one-sided, or comes with facial weakness, numbness, severe headache, vision change or difficulty speaking. Seek urgent help for those neurological symptoms. A gradual line without other symptoms is usually suitable for a routine cosmetic consultation if you want one.

Ask whether the mark looks temporary or etched, whether brow movement is contributing, what skin-care changes are reasonable for you, and how to judge a suitable treatment without changing your natural facial expression too much.