30 August 2024

Dehydrated vs. Dry Skin: Understanding the Difference and How to Combat Both

Many people, including estheticians, often confuse dehydration and dryness when discussing skincare. However, these terms are not interchangeable. Understanding the difference is key, especially as the colder, drier months of winter approach.

In Colorado, October often signals the start of the heating season. As we crank up our furnaces, the warm, dry indoor air can wreak havoc on our skin, especially for those who have already imbalanced skin types. Many people, particularly those who have moved from more humid climates, find their skin becoming parched and may turn to products that aren’t necessarily suited for the changes happening to their skin.

So, what exactly is the difference between dehydrated skin and dry skin? Let’s break it down and discuss how to address each issue as the air becomes colder and drier.

Dehydration: A Lack of Water

When we talk about dehydration in skincare, we’re referring to the skin’s lack of water. Dehydration occurs when the skin either cannot hold onto water or when we aren’t providing our bodies with enough hydration from within. Dehydrated skin can also result from external factors such as harsh weather, indoor heating, or using products that strip the skin of moisture.

Symptoms of dehydrated skin include:

  • Dullness
  • Tightness
  • Fine lines
  • Increased sensitivity

Unlike dry skin, dehydration isn’t about oil production—it’s about water retention in the skin.

Dryness: A Lack of Oil

In contrast, dry skin refers to the skin’s lack of oil or sebum. Sebum is the natural oil produced by the skin, and it’s essential for maintaining a healthy skin barrier. Without enough oil, the skin is unable to retain moisture, leading to Trans Epidermal Water Loss (TEWL)—the evaporation of moisture from the skin’s surface.

Dry skin often presents with:

  • Flakiness
  • Redness
  • Pronounced lines and wrinkles
  • Increased sensitivity to products

If your skin is dry, it means your skin isn’t producing enough oil to hold moisture in and protect your microbiome, the skin’s first line of defense.

The Relationship Between Dehydration and Dryness

Although dehydration and dryness are different, they are closely connected. A lack of oil in the skin often leads to increased water loss, as there isn’t enough sebum to create a barrier that holds moisture in. This can make the skin look dull and older, with more visible fine lines and redness.

Interestingly, having oily skin can actually be beneficial, as it helps retain moisture and maintain a healthy barrier, keeping your skin plump and youthful. However, when your skin is both dehydrated and dry, the damage can compound, making it harder for your skin to recover.

Avoid Over-Exfoliation

When faced with dry or flaky skin, many people reach for exfoliators to slough off dead skin cells. While exfoliation can temporarily reduce the appearance of flakes, over-exfoliation can strip the skin of its natural oils, making the problem worse. Without enough sebum, your skin becomes even more susceptible to TEWL, further exacerbating both dryness and dehydration.

Instead, focus on repairing your skin barrier and replenishing lost moisture before using aggressive exfoliants.

How to Combat Dehydration and Dryness

As the seasons change, it’s important to adjust your skincare routine to address the shift in climate and humidity levels. Here’s what you can do:

  • Hydrate Internally and Externally: Drink plenty of water and use hydrating serums and creams containing ingredients like hyaluronic acid, which binds water to the skin.

  • Use Moisturizers Rich in Lipids: Look for moisturizers that contain ceramides, fatty acids, and cholesterol to support your skin’s natural oil production and repair the barrier. These ingredients help lock in moisture and prevent water loss.

  • Cycle Your Skincare Seasonally: Consider changing your skincare products as the weather shifts. You may need richer creams during colder months and lighter formulas in the summer.

  • Consult Your Esthetician: It’s always a good idea to seek professional advice if your skin feels off balance. An esthetician can recommend the best products for your skin type and seasonal needs, ensuring your skin barrier stays healthy.

Final Thoughts

Dry and dehydrated skin may seem similar but are, in fact, quite different in terms of what your skin needs. Dehydration is a lack of water, while dryness is a lack of oil. To maintain a healthy, glowing complexion, it’s crucial to understand these differences and adjust your skincare routine accordingly, particularly as the seasons change.

By using hydrating products, nourishing moisturizers, and consulting with your esthetician, you can protect your skin from the harsh effects of dry indoor heat and cold outdoor air. Keep your skin barrier intact, stay hydrated, and enjoy a smooth transition from season to season.

 

Danielle is a licensed esthetician in the state of Colorado and owner of Derma Lab. She is a Face Reality Certified Acne Specialist and has been in the industry since 2007.  Danielle has worked in spas & medi spas, and has been trained in chemical peels, microdermabrasion, microneedling and Sciton Laser Systems. Nothing here is meant to be medical advice.

 

 

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