Elastin.

Elastin forms a network of rubber-like fibres in the dermis that returns the skin to its shape after stretching – after smiling, for example. While collagen provides firmness, elastin provides elasticity. The body produces it mainly in childhood; in adulthood new formation is minimal.

Chronic UV exposure leads to solar elastosis: the fibres clump and lose their function, the skin becomes lax and crinkly. Smoking accelerates the breakdown. That is why sun-exposed skin on the neck, décolleté and backs of the hands visibly ages faster than protected skin.

Treatments cannot replace elastin directly; microneedling, PRP and polynucleotides stimulate the fibroblasts that also form elastic fibres, and skin boosters improve water binding, which measurably increases elasticity. The most effective protection remains consistent sun protection.

This lexicon entry is general information and does not replace the medical consultation required under German law (§ 630e BGB).