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Hydrating and moisturizing are words often used in the same context, but in reality, they mean quite different things.
Hydrating ingredients attract water to the skin’s surface, ensuring it stays plump, while moisturizing ingredients create a protective layer, preventing water loss.
However, many products boast both qualities.
The American Academy of Dermatology Association advises choosing products based on your skin type. Whether your skin needs moisture or hydration depends on whether it is dry or oily. (1)
Hydration is about water, while moisture involves oil. Some ingredients, such as humectants, excel at both. (2)
Since everyone’s skin is different, knowing your skin ensures a personalized routine for a healthy and balanced glow.
Read on to demystify these terms and find what suits your skin best.
What Is the Difference Between Skin Hydration and Moisturization?
Walking down the skin care aisle often leads to the “Should I buy a moisturizer or a hydrator?” dilemma.
Moisturizers focus on sealing in existing moisture, making them ideal for dry skin. They form a barrier to prevent water loss.
Hydrators, on the other hand, actively attract and hold water, benefiting all skin types.
While experts have categorized moisturizers as products with ingredients such as squalene and occlusives and hydrators as products with humectants such as glycerin, some products blur the lines by being both hydrating and moisturizing.(2) (3)
So, it is safe to say that these terms lack a gold standard definition in marketing, allowing brands the flexibility to use them interchangeably.
Hydrators such as glycerin, ceramides, and hyaluronic acid not only absorb environmental water but also boost water content within skin cells. (4) (5)
Moisturizers, on the other hand, come in various forms containing ingredients such as mineral oil, petrolatum, and plant oil. (2)
The choice between them depends on your skin type. So, read the ingredients and experiment to discover what suits your skin’s hydration preferences best.
| Factors | Skin Hydration | Skin Moisturization |
|---|---|---|
| Primary Function | Seals in existing moisture | Actively attracts and holds water |
| Skin Types | Dry or mature skin | Suitable for all skin types |
| Ingredients | Emollients and occlusives (such as shea butter and petroleum jelly) | Hyaluronic acid, glycerin, aloe vera, and other humectants |
| Texture | Often thicker, creamier | Lightweight, gel-like, or liquid |
When Does Your Skin Need Hydration?
If your skin feels dry, tight, and irritated, it’s signaling a need for hydration. Dehydrated skin tends to suffer from dullness and a tendency to itch.
To address this, experts recommend incorporating potent serums containing ingredients such as hyaluronic acid into your routine, providing deep hydration. (5)(6)
An increase in noticeable fine lines and wrinkles may also indicate dehydration. This is because dehydrated skin lacks plumpness and volume. The ideal goal is bouncy skin.
In all such cases, the right hydration strategy becomes key. (7)
When Does Your Skin Need Moisturization?
Moisturization is for all skin types and is a necessary step in every skin care ritual. Even oily skin types benefit from moisturization.
Skipping this step may trigger the skin to produce more oil to compensate for the lack of hydration, worsening skin problems such as acne. (2) (3)
In harsh, dry conditions, especially during winter, your skin is prone to losing moisture rapidly. The chilly air and indoor heating systems strip away natural oils, leading to dryness and dehydration.
You can combat this by diligently moisturizing during these seasons.
Next, after a shower or bath, your skin may feel tight or itchy. This sensation indicates a loss of natural oils and moisture.
Sealing in the hydration with a moisturizer, preferably applied while your skin is still slightly damp, helps replenish what cleansing routines may strip away. (4)
How Can You Properly Hydrate Your Skin?
Opt for skin care products rich in hydrating ingredients such as hyaluronic acid, glycerin, and aloe vera. These ingredients attract and retain water, ensuring your skin stays supple.
Other than applying hydrating products, drinking an adequate amount of water is also crucial to make sure your skin remains hydrated. This has been proven by a study that found that hydration in the outer layer of the skin increased with higher water consumption. (5)
An earlier study suggested that 3 L of water intake per day for males and 2.2 L for females are good enough to maintain required hydration levels. (8)
Also, consider using a humidifier, especially in dry climates or during winter. It adds moisture to the air, preventing your skin from drying out.
How Can You Properly Moisturize Your Skin?
Moisturizing is for everyone! So, make sure your skin care cabinet always has a moisturizer. Select a moisturizer that suits your skin type.
For dry skin, go for a cream-based moisturizer, while for oily skin, gel-based ones work well. Combination skin benefits from a water-based moisturizer.
Apply moisturizer when your skin is slightly damp, which is possible post-shower or after cleansing. This helps lock in the moisture.
Also, since the UV rays can dehydrate your skin, leading to premature aging, choose a moisturizer with a high SPF for added protection. (9)
How Do I Know if an Ingredient Is Moisturizing or Hydrating?
You can easily determine which ingredient is hydrating and which one is moisturizing by keeping the following in mind.
Moisturizing ingredients
With an evolving understanding of the skin barrier, modern moisturizers combine various ingredients to achieve specific results.
Occlusive moisturizers, exemplified by petrolatum, coconut oil, castor oil, olive oil, beeswax, and squalene, form a barrier, reducing water loss through the skin by nearly 99%.
Humectants, such as urea and glycerin, attract and bind water, but their effectiveness varies with humidity levels.
Alpha-hydroxy acids (AHAs), such as glycolic and lactic acids, act as humectants while promoting desquamation and improving barrier function. (2)
Hydrating ingredients
Humectants such as hyaluronic acid and glycerin are your skin’s favorite hydrators. They draw water from the surroundings or deeper layers, ensuring your skin stays refreshed and hydrated.
There are also water-binding ingredients including amino acids, which are proteins that work with humectants. They bind water molecules and bring them to the skin. (2)
Most-Asked Questions
How often should I moisturize my skin?
Moisturizing twice a day, morning and night, creates a solid foundation for healthy skin.
Can I use the same moisturizer for my face and body?
When it comes to choosing a moisturizer, the face deserves special attention due to its delicate nature. While some moisturizers are multipurpose, a dedicated facial moisturizer is always the way to go.
Final Word
Choosing between moisturizing and hydrating products often feels like dealing with a skin care puzzle.
Moisturizers act as guardians and are perfect for dry skin as they seal in existing moisture. On the flip side, hydrators, such as hyaluronic acid and glycerin, actively attract and retain water, benefiting all skin types.
So, explore, experiment, and find out what works for you!
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