Why does sun-damaged skin cause sagging skin?

Ultraviolet exposure reaches living layers of the skin and creates repeated cellular stress. Over time, this stress encourages enzymes to break down collagen, while the skin produces and arranges replacement fibres less effectively. Elastic fibres can also become disorganised, so skin does not spring back as readily after movement.

The supporting network is especially relevant in areas that receive regular exposure, such as the face, neck, chest and backs of the hands. Ageing, genetics, weight changes and smoking can also affect laxity, so sagging skin has more than one possible contributor.

Use broad-spectrum sunscreen on exposed skin and reapply it as directed, especially during prolonged outdoor activity. Clothing, sunglasses and shade add physical protection. A gentle cleanser and regular moisturiser can reduce dryness that makes fine texture more noticeable.

A dermatologist can assess the degree of laxity and discuss options such as topical retinoids, resurfacing procedures, ultrasound or other tightening treatments. Suitability depends on your skin type, medical history, sun exposure and the area being treated.

Arrange a dermatology assessment if laxity changes quickly, affects one side, follows a new rash or wound, or comes with pain, bleeding, crusting or a new changing spot. A clinician can examine the skin rather than assuming the change is caused by sun exposure.

Could sun exposure be contributing to the laxity in this area? Which treatment matches my skin type and degree of looseness? What protection should I use daily, and what changes would need an earlier review?