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What Does Hyaluronic Acid Do for Skin? 5 Hyaluronic Acid Benefits

Hydration is at the heart of every skincare routine – and it’s essential for smooth, supple, and radiant skin. But when it comes to locking in hydration and supporting the skin moisture barrier, there is one ingredient that we turn to time and time again: hyaluronic acid.

From skincare experts to novices, this hero hydrator has become a staple in most skincare rituals, but what does hyaluronic acid do for your skin ? 

In this comprehensive guide, we’re unpacking the top five benefits of hyaluronic acid for skin so you can utilise this nourishing ingredient to manage your skin concerns moving forward.

What is hyaluronic acid?

Hyaluronic acid is a water-loving molecule that’s classified as a humectant – meaning it attracts water to the skin’s surface. This ingredient is naturally produced by the body: making it highly compatible with all skin types, as well as many common skincare ingredients.

So, what does hyaluronic acid do for skin? 

Thanks to its status as a humectant, hyaluronic acid works by drawing moisture to the skin to amplify hydration levels. This results in smoother, plumper, softer skin.

5 benefits of hyaluronic acid for skin.

Often heralded as a key to skin hydration, hyaluronic acid has cemented its rightful place in the world of skincare. So, what hyaluronic acid skincare benefits can you expect?

Below are the top five advantages of integrating this hydrating powerhouse into your skincare ritual. Hyaluronic acid:

Improves water retention in the skin’s surface

Reinforces the skin moisture barrier

Re-plumps and smooth the skin to diminish visible signs of ageing

Benefits all different skin types

Pairs well with other skincare ingredients

Continue reading – we’ll explore these hyaluronic acid benefits in detail below.

1. Helps the skin retain water

Dehydrated skin, which refers to a lack of water, is a common concern that can affect any skin type. Signs of skin dehydration include:

  • Rough, dry patches
  • Lacklustre appearance
  • More prominent fine lines and winkles
  • Darker under-eye circles
  • Itching sensations

As a humectant, hyaluronic acid benefits the skin by attracting moisture from the environment, as well as other skincare products. It can also hold up to 1,000 times its weight in water, which makes it easier for the skin to retain moisture.

2. Strengthens the skin moisture barrier

The skin’s outermost layer – the epidermis – is home to the skin moisture barrier, which acts as your skin’s protective shield. In simple terms, the skin moisture barrier has two primary functions: keep moisture in and keep external allergens out.

A damaged skin barrier is more common than you might think; it can be triggered by improper skincare products, over-cleansing, over-exfoliating, UV rays, and extreme temperatures. When you have a compromised skin moisture barrier, you experience trans epidermal water loss (TEWL), which can exacerbate skin concerns.

Hyaluronic Acid benefits the skin moisture barrier by binding water to the skin surface and mitigating the effects of TEWL.

3. Re-plumps and smooths ageing skin

Although the body produces hyaluronic acid, this naturally decreases with age (along with collagen). This makes the skin prone to dehydration, which exacerbates the look of fine lines, wrinkles, dull skin, and rough, dry patches.

Incorporating hyaluronic acid skincare benefits ageing and mature skin by improving skin firmness and textural concerns. Well-hydrated skin is plumper and smoother, has more elasticity, and appears more radiant. 

4. Supports all skin types

While there is no singular ‘best’ serum for your face, hyaluronic acid has the unique ability to complement all skin types. So, whether you’re seeking targeted hydration on combination skin or have sensitive or dry skin that needs a boost, hyaluronic acid really does it all.

Even if you have oily skin, hyaluronic acid can benefit your complexion. While you might think extra hydration is the last thing your skin needs, it might actually be just what your skin is lacking. Skin types prone to oil (that is, combination, oily, or congested) are ultimately ‘unbalanced’, and depriving the skin of moisture can trigger more oil production. Hyaluronic acid delivers lightweight hydration to the skin surface while regulating oil levels.

5. Plays well with other skincare ingredients

We tend to experience multiple skin concerns simultaneously, meaning that a combination of targeted ingredients is required. This is where ingredient compatibility is so important – because the wrong pairing can disrupt the skin moisture barrier.

Hyaluronic acid is one of those rare ingredients that not only plays well with other ingredients, but can even mitigates some of their harsher side effects.

Some potent partnerships include:

  • Retinol and hyaluronic acid: though retinol is powerful for targeting anti-ageing concerns, it’s also known for drying out the skin. Hyaluronic acid benefits the skin by minimising dryness, tightness and redness, and you can introduce it, alongside our Retinol Skin-Renewing Daily Micro-Dose Serum, into your evening routine.
  • Vitamin C and hyaluronic acid: this pair of ingredients happens to complement each other perfectly – especially as a dynamic anti-ageing duo. Vitamin C brightens and protects against external stressors, while hyaluronic acid plumps and hydrates. Our Powerful-Strength Line-Reducing Concentrate harnesses both ingredients in one single formula to promote radiance and smoother-looking skin.
  • Salicylic and hyaluronic acid: on its own, salicylic acid is an effective blemish-fighting ingredient known for its ability to unclog pores and encourage skin cell turnover. However, it can have a drying effect on the skin, so it’s important to also prioritise hydration. Using hyaluronic acid alongside a salicylic-acid based serum like our Clearly Corrective™ Dark Spot Solution can help maintain the right balance.
  • Glycerin and hyaluronic acid: sometimes dry, mature, or sensitive skin needs double the hydration support – which is where a combination of glycerin and hyaluronic acid can be most effective. The Hydro-Plumping Serum Concentrate from Kiehl’s utilises both ingredients to deliver a ‘filling effect’ on the skin, boosting elasticity and smoothing texture.

How to integrate hyaluronic acid into your skincare regime

To take advantage of the benefits of hyaluronic acid for skin, we suggest applying this ingredient to your skin – morning and night

The order in which you apply a hyaluronic acid serum depends on the other ingredients in your skincare regime. We’ve curated a sample skincare routine below for you to follow:

1. Cleanse your face of makeup, sweat, dirt and other impurities.

2. Move onto your serums, applying from ‘heaviest’ to ‘lightest’. If you’re using vitamin C, apply on dry skin in the morning only. If you’re using retinol, apply on clean, dry skin at night only.

3. Allow your previous serum to fully absorb, then apply two to three drops of Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum to slightly damp skin.

4. Seal in hydration with our cult-classic moisturiser, Ultra Facial Cream.

5. Apply sunscreen with a high protection factor (morning only).

Now you’re well-versed in how hyaluronic acid benefits your skin, explore the benefits of squalane for skin to double up on the nourishment.

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