Sensitive Skin: What Dermatology Really Knows About This Very Common Condition

“Sensitive skin” comes up in nearly half of all conversations about skincare—and yet it is neither a medical diagnosis nor an allergy. It is a syndrome: a set of sensations (tightness, tingling, temporary redness) triggered by factors that, in theory, should not cause any reaction. Understanding what’s happening beneath the skin helps us stop looking for a single culprit—and, above all, stop making things worse by piling on “soothing” products.

A syndrome, not an allergy diagnosis

According to a review published in Dermato Mag, nearly one in two people today report having sensitive skin—a figure that has risen significantly over the past few decades, even though the skin itself has not fundamentally changed. What has changed is the cumulative exposure to irritants (pollution, air conditioning, and the proliferation of skincare products) and the ability to identify a sensation that was previously considered normal. Skin sensitivity is neither an allergy nor a skin disease in the strict sense: it is increased reactivity, without immunological markers or systematic visible lesions.

What's Really Going On Under the Skin

According to the French Society of Dermatology, the mechanism at play is not immune-related but rather neurological. The nerve endings in the epidermis—particularly receptors such as TRPV1 and TRPM8—become hyperreactive to ordinary stimuli, such as heat, cold, friction, and certain cosmetic ingredients. This hyperreactivity is often accompanied by subtle micro-inflammation and a slightly compromised skin barrier, which allows irritants to penetrate more easily and amplifies the uncomfortable sensation, even though it is not always visible to the naked eye.

Sensitive skin doesn't react more often—it reacts more strongly to stimuli that most skin types ignore.

Sensitivity, Rosacea, Eczema: Don't Confuse Them

Sensitive skin differs from rosacea and eczema in that it lacks consistent skin lesions: there are no persistent papules or plaques, but rather sensations that come and go depending on the circumstances. A review published on ScienceDirect highlights that this diagnostic ambiguity partly explains why so many people describe themselves as having “sensitive skin” without a dermatologist finding any underlying condition—the syndrome does indeed exist, but it follows a different pattern than that of a classic skin disease.

The Often Underestimated Role of Cosmetics

An article published in the *Journal of Clinical and Aesthetic Dermatology* highlights a common paradox: the proliferation of “sensitive skin” products may actually perpetuate sensitivity. Each new product adds a potentially irritating ingredient, and the succession of different textures further weakens an already reactive skin barrier. The action that soothes is not always what you add, but what you remove.

What Really Soothes Sensitive Skin

Simple, lightly scented formulas, applied consistently, remain the most effective way to restore a stable skin barrier. Regular hydration and the lipids it contains play a direct role in the skin’s ability to react less to external stressors. Reducing the number of steps in your routine, rather than searching for a miracle product, is often the change that produces the most lasting results.

Full Protocol — VIBRE PARIS

It is this philosophy of simplicity that guided the Complete Protocol, designed to limit the number of steps rather than multiply them—an approach that aligns with the one outlined in our article on bakuchiol, where effectiveness is also sought through gentleness rather than potency.

Sensitive skin cannot be “fixed” with a single application. However, reducing sources of irritation one by one remains the most well-documented approach to soothing it long-term.

Sources

• Dermato Mag / Cairn.info — Prevalence and Definition of Sensitive Skin Syndrome
• French Society of Dermatology — Neurosensory Mechanism and TRPV1/TRPM8 Receptors
• Journal of Clinical and Aesthetic Dermatology — The Role of Cosmetics in Managing Skin Sensitivity