Dermatitis & Eczema

Understanding Dermatitis & Eczema

Dermatitis is a broad umbrella term grouping several inflammatory skin conditions defined by barrier dysfunction, increased transepidermal water loss (TEWL), and heightened sensitivity to external triggers. These include atopic dermatitis (eczema), contact dermatitis, and irritant dermatitis.

Across all forms, a common pattern is observed:

• Persistent dryness
• Pruritus (itching)
• Erythema (redness)
• Increased reactivity to otherwise tolerated substances
• Impaired skin barrier function
• Increased transepidermal water loss (TEWL)
• Reduced lipid content (ceramides, cholesterol, fatty acids)
• Heightened penetration of irritants and allergens

Peer-reviewed evidence consistently shows that barrier disruption is both a cause and consequence of dermatitis.

Why Conventional Skincare Often Worsens Symptoms

Many widely used formulations contribute to barrier degradation:

Cleansers and soaps

• High in sodium lauryl sulfate or overly aggressive surfactants
• High-lather formulations rich in coconut, tallow or palm derivatives
• Result: excessive lipid removal (sebum) and post-wash tightness

Moisturizers

• Rely on silicones and film-formers without replenishing lipids
• Provide temporary relief without structural repair

Fragrance (synthetic)

• Common source of irritation and sensitization in dermatitis-prone skin
• Often composed of multiple allergenic compounds

Essential oils

• Not inherently problematic when used within controlled concentrations
• Risk increases with:
  • High inclusion levels
  • Poorly balanced formulations
  • Compromised skin barrier

     

Excessive use — often justified by volatility — can increase exposure to sensitizing constituents such as limonene, linalool, and eugenol, particularly in leave-on products.

When formulated conservatively and within established safety thresholds (e.g., International Fragrance Association guidelines), essential oils can be compatible with skin, including sensitive profiles.

Formulation Approach for Dermatitis-Prone Skin

Effective topical care focuses on restoring function rather than masking symptoms.

1. Controlled Cleansing

Cleansing must remove impurities without stripping lipids.

• Low-foam or non-foaming systems
• Lipid-balanced soap structures (high oleic profiles)
• Absence of aggressive surfactants
  

2. Barrier Lipid Support

Replenishing lipids is essential to reduce TEWL and improve resilience.

Key components:

• Oleic-rich oils (when properly balanced)
• Squalane
• Glycerin (humectant with strong water-binding capacity)

3. Anti-Inflammatory Support

Reducing visible irritation improves tolerance over time.

Examples:

• Niacinamide (modulates inflammation and improves barrier function)
• Botanical extracts with documented soothing properties

Ingredients to Prioritize

• Niacinamide (Vitamin B3)
  Improves barrier function, reduces redness and inflammation, and decreases TEWL
• Glycerin
  One of the most effective humectants for restoring hydration
• Squalane
  Biocompatible lipid that reinforces barrier function without occlusion
• Olive-derived lipids
  High affinity with skin lipids when properly formulated

Ingredients to Avoid or Limit

• Synthetic fragrance
• Excessive essential oil concentrations (above safety thresholds or poorly balanced blends)
• Sodium lauryl sulfate (SLS, SLES) and harsh surfactants
• High concentrations of palm, tallow or coconut-derived cleansing agents
• Synthetic fragrance and allergenic compounds
• Aggressive mechanical exfoliants and exfoliating acids during flare-ups

Essential oils, when used within safety guidelines and properly balanced, are not inherently problematic. Risk is dose-dependent and increases in compromised skin.

Face vs Body Considerations

Facial dermatitis

• Requires lighter textures
• Lower occlusion
• Higher tolerance for actives like niacinamide

Body dermatitis

• Often benefits from richer lipid content
• Larger surface area increases cumulative irritation from cleansing products

How to care for Dermatitis skin

Effective topical care requires reducing cumulative irritation while restoring structural integrity of the stratum corneum.

Step 1: Controlled Cleansing Without Lipid Depletion

Cleansing is the most frequent source of barrier disruption in dermatitis-prone skin.

High-lather systems — particularly those rich in coconut, palm, tallow or aggressive synthetic surfactants — can:

• Remove intercellular lipids
• Increase TEWL
• Trigger post-cleansing irritation

A lipid-balanced cleansing approach minimizes this disruption.

Best Soap for Eczema-Prone Sensitive Skin	Bar Soap Specifically Formulated for Dermatitis Skin	Gentle Facial Cleanser for Reactive Skin

Formulations based on olive-derived saponification (high oleic profile) provide:

• Reduced lipid stripping
• Lower irritation potential
• Improved post-wash skin comfort

Step 2: Barrier Lipid Replenishment

Barrier repair is dependent on restoring lipid content and reducing water loss.

Rather than relying on film-forming agents, formulations should provide biocompatible lipids and humectants that integrate into the skin structure.

Unscented Olive & Squalane Body Lotion for Eczema Skin	Body Oils for Dry Irritated Skin

Key mechanisms:

• Reduction of TEWL
• Improvement of stratum corneum cohesion
• Increased tolerance to environmental stressors

Squalane and olive-derived lipids show high compatibility with skin lipids and support long-term barrier function rather than transient occlusion.

Step 3: Anti-Inflammatory and Barrier-Modulating Actives

Targeted actives can reduce visible inflammation and improve barrier resilience.

	Niacinamide (Vitamin B3): Reduces inflammation Improves ceramide synthesis Decreases TEWL Helps normalize skin response over time This makes it particularly relevant for facial dermatitis where tolerance to actives is often reduced.
Aqua b3 10% Niacinamide Serum for Sensitive Skin

Step 4: Maintaining Skin Stability Over Time

Long-term control of dermatitis depends on consistency and reduction of cumulative irritation, not short-term symptom suppression.

	This includes: Avoiding formulation overload Maintaining a stable routine Limiting unnecessary actives
Minimalist Skincare Routine for Sensitive Reactive Skin