What Works Skin — Independent · Evidence-First · Ad-FreeIssue 014 · 20 April 2026 · Next: 04 Maywhatworksskin.com
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Concern · Sensitive & Barrier · Eczema

P. 33 · GUIDE

A barrier disease,
not a skincare problem.

Barrier-first. Ceramides, then derm if it flares.

Atopic dermatitis is a chronic, relapsing inflammatory disease driven by filaggrin mutation, microbiome shifts, and Th2 inflammation. The skincare aisle treats it as a moisturiser problem; the dermatology literature treats it correctly. Both perspectives matter.

— § 01

The triggers worth tracking.

Itchy, red, dry patches in flexural sites

Antecubital, popliteal, neck, eyelids. Itch is cardinal — eczema without itch is rarely eczema.

92%
Lichenification from chronic scratching

Thickened, leathery patches. Indicates the disease has been active for months unmanaged.

68%
Personal or family history of atopy

Asthma, allergic rhinitis, food allergy. The atopic march signature.

72%
Worsens with soap, fragrance, hot showers

All universal triggers. The first audit is bathroom-product elimination, not new product introduction.

85%
⁂

— § 02

Ingredients that actually work.

Tier
Molecule
Role
Evidence
Tier A
Ceramide-rich emollient
Daily barrier
Twice-daily, generous, lifelong. The single most-evidenced intervention.
Tier A
Petrolatum / Aquaphor
Acute occlusive
Reference occlusive for active flares, particularly overnight wet-wrap protocols.
Tier A
Topical corticosteroid (low-mid potency)
Acute flare
Hydrocortisone 1% to clobetasol depending on site. Short courses; do not fear them.
Tier A
Tacrolimus 0.03–0.1% / Pimecrolimus
Steroid-sparing
First-line for face and folds. Long-term safety profile is now well-established.
Tier B
Crisaborole 2%
PDE4 inhibitor
Newer; useful for mild-moderate disease. Sting is the main limiter.
Tier A
Dupilumab (clinic)
Biologic
Moderate-severe disease. The single largest advance in eczema treatment in 20 years.
⁂

— § 03

The protocol.

  1. Phase 01 · Always

    Daily emollient

    Twice-daily ceramide cream, lifelong. The non-negotiable foundation.

  2. Phase 02 · During flares

    Topical anti-inflammatory

    Steroid for 7–14 days; tacrolimus for face/folds. Do not under-treat — short courses prevent chronicity.

  3. Phase 03 · Between flares

    Trigger audit

    Eliminate fragrance, sulfates, drying soaps. Cool showers. Cotton clothing. Identify food triggers if relevant.

  4. Phase 04 · If severe

    Systemic options

    Dupilumab and JAK inhibitors have transformed moderate-severe disease. See a dermatologist; do not loop on topicals indefinitely.

Bottom line

A chronic disease that needs lifelong daily emollient and short courses of anti-inflammatory therapy during flares. The dermatology consult belongs to anyone scratching nightly for more than 3 weeks.