The loss of structural elastin due to intrinsic and extrinsic ageing results in the skin’s inability to stretch and recoil (decrease in elasticity) and manifests as loss of skin firmness and sagging. While other extracellular matrix (ECM) components such as collagen and hyaluronic acid are continually synthesized and assembled through life, elastic fibres are not. Elastic fibre assembly and functionality require fibre cross‐linking, induced by the lysyl oxidase‐like (LOXL) enzymes, which sharply decrease during ageing.

中文翻译：

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黑莓-莳萝提取物组合可协同增加皮肤弹性。

由于内在和外在老化导致的结构弹性蛋白的损失导致皮肤无法拉伸和回缩（弹性降低），并表现为皮肤紧致度和下垂的丧失。虽然其他细胞外基质 (ECM) 成分如胶原蛋白和透明质酸在生命中不断合成和组装，但弹性纤维不是。弹性纤维组装和功能需要纤维交联，由赖氨酰氧化酶样 (LOXL) 酶诱导，在老化过程中急剧下降。