Why Oil-Based Moisturizers Work: The Key to Deep Hydration

When it comes to skincare, one of the most debated topics is whether oil-based or water-based moisturizers are better. While both have their benefits, oil-based moisturizers stand out for their ability to lock in hydration, strengthen the skin barrier, and deeply nourish the skin. But how do they work, and why are they so effective? Let’s dive in.

How Do Oil-Based Moisturizers Work?

Oil-based moisturizers contain plant-based or natural oils that mimic the skin’s natural sebum. Unlike water-based lotions that evaporate quickly, oils create a protective barrier over the skin, sealing in moisture and preventing transepidermal water loss (TEWL). This helps keep the skin hydrated for longer periods, making them ideal for dry, sensitive, or aging skin.

Key Benefits

of Oil-Based Moisturizers

Two bottles of facial serum with black droppers and labels

  • Oil-based formulas don’t just sit on the skin—they penetrate deep into the lipid barrier, keeping moisture locked in. Ingredients like jojoba oil, almond oil, and shea butter mimic the skin’s natural oils, preventing dryness and flakiness.

  • Your skin barrier is responsible for protecting against environmental damage. Oils fortify this barrier by replenishing lost lipids, making your skin more resilient to pollutants, allergens, and bacteria.

  • Natural oils are packed with fatty acids, vitamins, and antioxidants that repair and nourish the skin.

  • Many water-based lotions contain preservatives, alcohols, and synthetic fragrances that can irritate sensitive skin. Oil-based moisturizers, especially those with natural ingredients, reduce irritation and inflammation by eliminating harsh additives.

  • As we age, our skin produces less natural oil, making it prone to dryness and fine lines. Oil-based moisturizers help replenish this loss, keeping skin supple, plump, and youthful-looking.

Why Our Skin Absorbs These Oils So Well

The Science Behind It

The outer layer of the skin acts as a barrier to prevent water loss and protect against environmental damage. This barrier is made of:

  • Ceramides (50%) – Help retain moisture and provide structural integrity.

  • Fatty Acids (10-15%) – Maintain barrier function and hydration.

  • Cholesterol (25%) – Helps with skin elasticity and repair.

Since oil-based moisturizers contain fatty acids, they blend well with the skin’s natural lipids, reinforcing the barrier and preventing transepidermal water loss

The structure of fatty acids in plant oils resembles the lipids naturally found in our skin, which allows for better penetration and absorption. Here’s how it works:

  • Small molecular size: Certain oils like jojoba and argan have a small molecular structure that allows them to sink into the skin easily rather than sitting on top.

  • Lipid solubility: The outer layer of the skin is hydrophobic (water-repelling), meaning it absorbs oils better than water-based products.

  • Enhances cell membrane function: Fatty acids help repair and strengthen skin cell membranes, which improves moisture retention.

  • Anti-inflammatory properties: Oils rich in Omega-3 and Omega-6 (like hemp seed oil) help reduce redness and irritation by interacting with the skin’s inflammatory pathways.

Take a moment to discover which product is best for you with this simple quiz!

1️⃣ How does your skin typically feel after washing your face?

A) Tight, dry, or slightly irritated.
B) Greasy or shiny, especially in the T-zone.

2️⃣ How does your skin react to the weather?

A) It gets extra dry in winter and sometimes irritated.
B) It tends to get oilier in summer and more prone to breakouts.

3️⃣ How often do you deal with breakouts?

A) Rarely, but I get dry patches.
B) Often, especially in oily areas.

4️⃣ What best describes your skin texture?

A) Flaky, rough, or dull.
B) Smooth but with noticeable pores and occasional oiliness.

5️⃣ Do you prefer a rich, deeply hydrating formula or something lightweight?

A) Rich and nourishing – my skin needs extra moisture.
B) Lightweight and non-greasy – I don’t want to feel weighed down.

6️⃣ How does your skin behave throughout the day?

A) It gets drier as the day goes on.
B) It becomes shinier, especially in my T-zone.

7️⃣ Do you often experience tightness or itching, especially in colder months?

A) Yes, my skin feels uncomfortable and needs extra hydration.
B) No, my skin is more prone to excess oil than dryness.

8️⃣ What is your biggest skin concern?

A) Dryness, irritation, or fine lines.
B) Acne, blackheads, or excess oil.

RESULTS!

  • Tully is your perfect match! 🌿 It’s perfect for soothing dry, sensitive skin and replenishing moisture.

  • Klear is designed for combination skin, balancing oil production while keeping the skin hydrated and clear.