At Authentic Health, we believe healthy skin is a reflection of overall wellness and longevity. Whether you’re dealing with dry winter skin in Asheville, NC, or humidity-related skin barrier issues in Greenville, NC, understanding how moisturizers work is essential for maintaining healthy, resilient skin at every age.
This article is part of The Skin Longevity Masterclass, an evidence-based series exploring strategies for lifelong skin health. In previous articles, we discussed sunscreen, antioxidants, retinoids, and the skin’s role as a longevity organ. Now in Part 5, we’re focusing on one of the most important — and often overlooked — aspects of skincare: moisturizers.
Why Moisturizers Matter for Healthy Skin
Despite the word “moisturizer” sounding less exciting than retinoids or vitamin C serums, moisturizers are foundational to maintaining healthy, youthful-looking skin.
Your skin’s ability to retain hydration directly impacts:
- Skin barrier function
- Inflammation levels
- Fine lines and wrinkles
- Collagen preservation
- Sensitivity and irritation
When the skin barrier becomes damaged, inflammation increases and collagen begins to break down. Environmental stressors like UV exposure, dry mountain air in Asheville, or overuse of skincare products can all contribute to this process.
Even beneficial ingredients like retinoids can initially impair the skin barrier, making hydration and repair essential components of any skincare routine.
Understanding the Skin Barrier
The outermost layer of the skin, called the stratum corneum, acts as your body’s protective shield.
Think of it like a brick wall:
- The bricks = skin cells (corneocytes)
- The mortar = lipids like ceramides, cholesterol, and fatty acids
This lipid barrier locks in hydration while protecting against environmental irritants, allergens, bacteria, and pollution.
Healthy skin naturally regulates something called transepidermal water loss (TEWL) — the evaporation of water from the skin’s surface. When TEWL increases, skin becomes:
- Dry
- Rough
- Inflamed
- More prone to accelerated aging
Common Causes of Dry, Dehydrated Skin
At Authentic Health, many patients in Asheville and Greenville experience increased skin dryness due to seasonal weather changes and environmental stressors.
Factors that increase transepidermal water loss include:
- Retinoids
- Over-exfoliation
- Cold or dry weather
- Harsh cleansers
- Over-washing
- Aging
- Menopause and hormonal shifts
Excess water loss weakens the skin barrier and contributes to inflammation, eczema flares, sensitivity, and premature aging.
The 3 Best Ways to Improve Skin Hydration
1. Add Water to the Skin With Humectants
Humectants pull water into the outer layers of the skin, helping improve hydration and smoothness.
Best Humectant Ingredients
- Glycerin
- Hyaluronic acid
- Urea
Lotions typically contain higher amounts of humectants than creams or ointments. However, hydration alone is not enough — the skin also needs protection to prevent water from evaporating.
2. Repair the Skin Barrier With Lipids
Lipids replenish the skin’s natural “mortar,” helping strengthen and seal the barrier.
Best Barrier-Repair Ingredients
- Ceramides
- Squalane
- Triglycerides
- Shea butter
One especially beneficial ingredient is niacinamide, which helps stimulate ceramide production and reduce inflammation simultaneously.
3. Lock In Moisture With Occlusives
Occlusive ingredients form a protective barrier over the skin to prevent moisture loss.
Best Occlusive Ingredients
- Petrolatum
- Dimethicone
- Lanolin
Patients with very dry skin, eczema, mature skin, or postmenopausal skin often benefit from thicker creams or ointments with stronger occlusive properties.
What to Look for in a Moisturizer
When shopping for a moisturizer, look for products that combine all three hydration strategies:
- Humectants
- Barrier-repair lipids
- Occlusive ingredients
Recommended Moisturizer Ingredients
Look for:
- Glycerin
- Shea butter
- Petrolatum
- Ceramides
- Niacinamide
Avoid:
- Fragrance
- Harsh alcohols
- Excess exfoliating acids in dry climates
How to Use Moisturizer for Best Results
For optimal hydration, apply moisturizer immediately after:
- Showering
- Washing your face
- Cleansing your skin
This helps trap water inside the skin barrier before it evaporates.
Many dermatology providers recommend:
- Lightweight lotions during the day
- Richer creams or ointments at night
And remember — moisturizers aren’t just for your face. Areas like the hands, elbows, knees, and legs commonly experience dryness and benefit from daily hydration.
Healthy Skin Starts With a Strong Skin Barrier
At Authentic Health, we view skin health as part of overall longevity and wellness. Healthy, hydrated skin isn’t just cosmetic — it’s a sign your skin is functioning properly to protect you from inflammation, irritation, and environmental damage.
Whether you’re building a skincare routine in Asheville, NC or looking for solutions for dry, aging skin in Greenville, NC, choosing the right moisturizer is one of the most effective steps you can take for long-term skin health.