Mechanism

Elastin

Elastic dermal fibers that allow skin to recoil; degraded with cumulative photoaging.

Review

What it is

Elastin fibers give skin its snap-back. Photoaging causes elastin to accumulate as disorganized 'solar elastosis' rather than functional fibers.

Loss of functional elastin contributes to slack texture and fine lines.

Elastin remodeling is a key reason why photoaged skin behaves differently from chronologically aged skin.

Cumulative UVA/UVB damage that drives oxidative stress, MMP activation, and DNA changes.

Imbalance between reactive oxygen species and antioxidant defense; a driver of structural damage.

Ingredient axes

Photoprotection axis

UV filters that reduce cumulative UVA/UVB exposure — the most evidence-supported aging-related axis.

Keratinization / sebaceous axis

Vitamin A-derived agents that normalize follicular keratinization and modulate sebaceous activity.