Why Does My Skin Feel Sensitive?

Skin sensitivity that appears suddenly, rather than being a lifelong trait, usually points to a specific recent disruption rather than an inherent characteristic. The most common cause is over-exfoliation, whether from acids, scrubs, or retinoids used too frequently or in too high a concentration, which strips away the outer layer of protective cells faster than the skin can replace them.

Introducing several new products at once is another frequent trigger, since it becomes difficult to identify which ingredient is responsible for a reaction, and the cumulative effect of multiple new actives can overwhelm the skin's tolerance even if each one is well formulated. Environmental shifts, such as moving to a drier climate or a change in season, can also stress the barrier enough to tip previously calm skin into a reactive state.

Once the barrier is compromised, the skin becomes more permeable, allowing irritants to penetrate further and reach nerve endings that would normally be shielded, which produces the stinging, tightness, and redness associated with sensitivity. The good news is that, unlike an inherited sensitive skin type, this kind of reactive state generally improves once the underlying disruption is addressed and the barrier has time to rebuild.