After a summer spent outdoors, you may notice that the lines across your forehead or between your brows seem more obvious than they did a few months earlier. It is easy to blame the sunshine itself, but there is usually more than one factor involved. Bright light causes us to squint and frown repeatedly, often without realising we are doing it. At the same time, ultraviolet exposure contributes to the gradual breakdown of collagen and elastin within the skin. Together, repeated facial movement and changes in skin quality can make existing lines appear deeper and more noticeable. According to Dr Ayad Harb, understanding whether a line is caused primarily by facial movement or has become established within the skin is the first step towards treating it properly.
Facial expressions are controlled by a complex group of muscles working together. When we are outside in bright sunlight, the muscles around the eyes and between the eyebrows naturally contract to reduce glare. Some people also raise their eyebrows at the same time, activating the frontalis muscle responsible for horizontal forehead lines. This does not mean that one sunny holiday suddenly creates permanent wrinkles.
Dr Ayad explains that the lines we notice after summer are often expressions that were already developing but have become more apparent through repeated movement, dehydration, sun exposure and changes in skin quality. When you are younger, the skin usually returns to its resting position quickly after an expression. As collagen and elasticity gradually decline, repeated folds can begin to remain visible even when the face is relaxed.
One of the most important distinctions Dr Ayad makes when assessing forehead lines is whether they are dynamic or static. Dynamic lines appear mainly when you raise your eyebrows, frown or squint. When the muscles relax, the lines largely disappear. Static lines remain visible even when the face is completely relaxed.
This difference matters because the treatment approach may be different. Anti-wrinkle injections are primarily used to reduce excessive muscle activity responsible for dynamic lines. However, if a forehead crease has already become deeply established within the skin, reducing movement may soften its appearance without necessarily removing the line completely. Skin quality may then also need to be addressed.
Anti-wrinkle injections can be considered for movement-related lines across the forehead and upper face following an appropriate medical assessment. Rather than filling the wrinkle, the treatment works by temporarily reducing selected muscle activity. As excessive contraction decreases, the skin above the muscle is repeatedly folded less forcefully. This can soften dynamic lines and may help prevent them from becoming increasingly etched into the skin.
For Dr Ayad, however, treating the forehead is not simply about making every line disappear. The forehead plays an important role in facial expression and eyebrow position. Reducing too much movement can alter the balance of the upper face and produce a result that looks heavy or unnatural. Clinical literature similarly emphasises that forehead treatment needs to be individualised because anatomy, muscle strength, eyebrow position and patterns of facial expression vary considerably from person to person.
There is no universal pattern for treating forehead lines. Some people naturally have strong forehead muscles. Others compensate for a lower eyebrow position by repeatedly lifting their brows. In these cases, reducing forehead movement too aggressively could make the brows feel or appear heavier. Dr Ayad therefore assesses how the entire upper face moves before considering treatment.
He looks at the forehead at rest, during eyebrow elevation and while the patient frowns and squints. Eyebrow shape, natural asymmetry, muscle strength and existing lines all influence the treatment plan. The objective is to soften excessive movement without removing the expressions that make a face look individual. A natural result should still move.
It depends on how established they are. When a line is predominantly caused by movement, reducing repeated muscle contraction may make a considerable difference to its appearance. A deep static line is different. Once a crease remains visible at rest, changes have already taken place within the skin itself. In these circumstances, anti-wrinkle treatment can reduce the repeated folding that makes the line deeper, but additional attention to skin quality may be appropriate. Dr Ayad explains that this is why treating facial ageing successfully often requires looking beyond the wrinkle itself. Collagen loss, sun damage, hydration and overall skin condition can all influence how strongly a forehead line is visible.
Summer squinting does not affect only the forehead. The repeated narrowing of the eyes can make lines at the outer corners of the eyes more noticeable, while frowning against bright light activates the muscles between the eyebrows. These expression lines are often among the first signs of facial ageing because the eye area is constantly moving.
Again, the goal should not be to eliminate every movement. Dr Ayad’s approach is to consider the relationship between the forehead, brows and eye area rather than treating each line in isolation. Maintaining this balance is important for keeping the face expressive and avoiding an obviously treated appearance.
Treatment is only part of the conversation. If bright light continually makes you squint, a good pair of sunglasses can reduce the need for repeated contraction around the eyes and brows. Daily broad-spectrum sun protection is equally important.
Anti-wrinkle treatment may address movement, but it does not protect collagen from ultraviolet exposure. UV radiation contributes to premature skin ageing, uneven pigmentation and deterioration in skin structure over time. For Dr Ayad, prevention and treatment therefore work together. The aim is not simply to soften a line today, but also to reduce some of the factors making it more pronounced in the future.
It should not have to. The “frozen forehead” appearance is usually associated with reducing more movement than is necessary for the individual face. Modern aesthetic treatment is increasingly focused on preserving natural expression while reducing the movements that are creating unwanted lines. Dr Ayad’s approach centres on understanding how much movement a person actually needs to maintain their natural eyebrow position and facial expression. The aim is not a completely motionless forehead. It is a forehead that appears softer and more rested while still belonging to the same face.
How to Fix Forehead Lines from Summer Squinting starts with recognising that not every forehead line is the same. Repeated squinting, frowning and eyebrow movement can make dynamic lines more noticeable, while long-term sun exposure and declining collagen can gradually turn temporary expression lines into creases that remain visible at rest. For Dr Ayad Harb, the most important part of treatment is understanding this difference before deciding what should be done.
Anti-wrinkle injections may help soften movement-related forehead and frown lines by reducing excessive muscle activity, but the objective should never simply be to stop the face moving. A considered approach respects eyebrow position, facial anatomy and natural expression. Combined with good sun protection and reducing unnecessary squinting, this can help the upper face look smoother and more rested without losing the movement that makes it look natural.
Lines caused mainly by squinting can look softer when the muscles are relaxed, particularly when they are still dynamic rather than permanently etched into the skin. Over time, however, repeated movement combined with collagen loss and sun exposure can make these lines remain visible even at rest. Sun protection, sunglasses and appropriate aesthetic treatment can help reduce how noticeable they become.
Forehead lines can often be softened, but the best treatment depends on whether they appear only with movement or remain visible at rest. Movement-related lines may respond well to anti-wrinkle treatment, while deeper static lines may also benefit from treatments that improve skin quality and collagen. Daily sun protection, good hydration and avoiding repeated squinting can also help prevent lines becoming more pronounced.
Repeatedly scrunching, frowning or squinting creates temporary folds in the skin. When the skin is young and elastic, these usually disappear quickly. As collagen and elasticity decline with age, repeated movement can contribute to expression lines becoming more established. Facial expressions are completely normal, so the aim is not to avoid movement altogether, but to reduce unnecessary strain such as frequent squinting in bright light.
