Hyalu B5 Serum Reviews | Best Hyaluronic Acid Serum?

In the skincare world, Hyaluronic Acid is synonymous with hydration, glow, and plumpness. Those with dry skin often opt for this ingredient to rescue their skin from moisture loss, redness, itching, dullness, and flaking. Research displays that this element is not only supremely able to hydrate your skin, but it can also help you achieve a youthful appearance by diminishing visible fine lines and wrinkles. With multiple benefits in its grasp, Hyaluronic Acid has wooed many beauty enthusiasts and established itself as a trustworthy skincare ingredient.  

Hyalu B5 Serum Reviews

Among the prominent names, the Hyalu B5 Serum from La Roche-Posay is a serum that has consistently attracted buzz towards itself. It claims to be an ultra-hydrating serum that can significantly replenish your moisture barrier to promote healthier-looking skin. But is it potent enough to deliver on its promises? Are the Hyalu B5 Serum reviews in its favor? I have all the information you need to get answers to these questions. So, without further ado, let’s dive deep into the skincare world and explore how mighty this serum is. 

Hyalu B5 Serum Reviews | Bang for the Buck? 

La Roche-Posay is a reputed brand in the skincare industry and is recommended by 90,000 dermatologists worldwide. The brand established its roots in 1975 and, with its science-first approach, has created formulations that aim to enhance the quality of your life through skincare. They offer a range of face and body care skincare products made with effective research and safe ingredients. With an impressive brand history and quality products, La Roche-Posay has earned a devoted following and bagged several achievements to its name. 

Hyalu B5 Serum

The Hyalu B5 Serum is among their bestsellers. It is suitable for all skin types and offers anti-aging and hydrating benefits. It is touted as one of the best solutions for issues commonly faced by people with a dry skin type. These include fine lines, loss of volume, compromised elasticity, dehydration, and sensitivity. This serum comes in a blue glass bottle with a dropper and is available in two sizes – 30 ml and 50 ml. It has a texture that slightly inclines toward thick and is not runny. However, it is incredibly lightweight and absorbs into the skin effortlessly.

Hyalu B5 Serum Ingredients 

HA is a polysaccharide mainly found in the connective tissues and eyes. In skincare, it is well-known for its large capacity to hold water to hydrate the skin, resulting in a plump and youthful appearance. Additionally, supporting the skin with Hyaluronic Acid can diminish wrinkles and fine lines because one of the reasons for their formation is the loss of this element over time.

It may also help boost collagen production to restore elasticity. Furthermore, HA instantly plumps the skin, replenishes moisture loss caused by environmental factors, and is compatible with all skin types. 

Madecassoside: This is an active ingredient derived from the Centella Asiatica Plant. It is rich in amino acids, beta carotene, fatty acids, and phytochemicals, making it potent to offer multiple skin benefits. Madecassoside increases the skin’s hyaluronic acid levels, thereby improving skin hydration. 

Hyalu B5 Serum Ingredients 

It has also shown a remarkable capacity to improve wrinkles, skin texture, and firmness. It is an effective antioxidant that protects the skin from damage caused by free radicals and environmental aggressors. Finally, this ingredient also displays supreme anti-inflammatory properties, making it suitable for sensitive and acne-prone skin. 

Glycerin: Glycerin is a moisturizing agent that has long been used in skincare products. It is a humectant, which means it helps the skin retain water. Consequently, one can see an improvement in skin hydration, relieve dryness and irritation, and refresh the complexion. 

Glycerin is also a potent emollient, making the skin soft and smooth, which is especially helpful for people with conditions like eczema or psoriasis that leave them with rough and dry patches. Additionally, it is anti-microbial, so it protects the skin from harmful microorganisms.

Panthenol: Similar to Glycerin, Panthenol is a humectant and an emollient. Hence, it helps hold and bind water to improve hydration and soften skin. It also reduces transepidermal water loss, i.e., water that evaporates through the skin, effectively shielding the skin against environmental factors. Moreover, this ingredient helps maintain a healthy skin barrier, calms irritation, and promotes wound healing.

Hyalu B5 Serum Ingredients 

Prebiotic Thermal Water: Signature to all La Roche-Posay products, the Hyalu B5 Serum contains thermal water loaded with minerals and antioxidants that help revitalize your skin. This water is sourced from La Roche-Posay, France, and has been scientifically demonstrated to rebalance and soothe the skin. It suits all skin types and can help dramatically refresh your tone. It is also rich in Selenium, a natural antioxidant known for intensely nourishing and soothing the skin. 

Hyalu B5 Serum Benefits 

  • Hyalu B5 Serum is tested dermatologically and ophthalmologically for maximum safety. 
  • The formula is safe for all skin types, including sensitive skin prone to irritation. 
  • La Roche-Posay Hyaluronic Acid Serum is free from oils and parabens. 
  • The formulation is non-comedogenic, meaning it does not clog pores and can be safely used by people with oily and acne-prone skin. 
  • This serum has a lightweight texture that quickly penetrates the skin. 
  • Hyaluronic Acid in this serum delivers optimum hydration to the skin, making it soft, smooth, and plump. 
  • This product helps achieve a youthful appearance by diminishing dryness, dullness, fine lines, and wrinkles. 
  • Consistent use of this serum may boost collagen production, helping the skin restore elasticity and suppleness.
  • Glycerin, Madecassoside, and Panthenol are soothing ingredients that help relieve irritation symptoms such as redness, flaking, and itching. 
  • You can use this serum alone or in conjunction with other skincare products.
Hyalu B5 Serum


  • The Hyalu B5 Serum is expensive.
  • Some customers mentioned that the formula feels sticky and has a strong fragrance.
  • A few customer reports suggest this serum could lead to rashes or itching, particularly for people with sensitive skin.

La Roche-Posay Hyalu B5 Serum Side Effects 

While the Hyalu B5 Serum is mindfully crafted to achieve optimum results without any side effects, a couple of ingredients in its composition deserve to be highlighted due to their controversial nature.

The third ingredient listed on the product label is Alcohol Denat, which suggests it may be present in a comparatively higher percentage. It acts as an excellent solvent and is helpful to create fast-absorbing formulas. It can also help refresh and disinfect the skin.

However, research reveals that this ingredient can be overly drying. Hence, over the long run, it can dry out the skin so much that your skin may get forced to compensate for it with extra oil production. Furthermore, it is also debated that Alcohol Denat can damage the skin barrier and cause inflammation. 

This serum also contains parfum/fragrance that (as the name suggests) helps the product smell nice. However, parfum and fragrance are simply generic terms made up for a component containing up to 30 to 50 chemicals on average. Hence, there’s no way to determine what exactly goes into this ingredient. Experts suggest avoiding skin care products containing fragrance if you have sensitive or allergic skin. 

How to Use Hyalu B5 Serum? 

  1. Use a facial cleanser to thoroughly wash off dirt, oil, or makeup.
  2. If you use a toner, you can use it after cleansing as usual. However, if not, remember to keep your skin slightly damp and not dry it completely. 
  3. While the toner is still absorbing (or on a damp face), apply 2-3 drops of Hyalu B5 Serum. 
  4. Gently massage the product into your skin and allow it to get absorbed into the skin. This will take a few minutes. 
  5. You may apply other serums, a moisturizer, and eye cream. 
  6. Finish by applying a broad-spectrum sunscreen as the last step in your morning routine. 
  7. You can use this serum alone or mix it with your moisturizer for added benefits. 
  8. Use once or twice daily. 
How to Use Hyalu B5 Serum? 

La Roche-Posay Hyalu B5 VS The Ordinary

The Hyalu B5 Serum is often compared against its temporary serum from The Ordinary, which is called Hyaluronic Acid 2% + B5. The Ordinary is a skincare brand that excels in creating effective formulations similar to La Roche-Posay. This brand is highly popular due to its simple yet potent formulations, affordable rates, and no-nonsense approach. Let’s analyze the similarities and differences between these two serums to determine which one overpowers the other. 


  • Both serums come in a glass bottle with a dropper. They also display similarity in design with the bottle graced with a label with the branding and other relevant information printed on it. 
  • These serums utilize the same combination of Hyaluronic Acid and Panthenol and are named after the same components. 
  • Hyalu B5 and The Ordinary HA 2% + B5 more or less claim to be pure Hyaluronic Acid Serums and offer multiple similar benefits. 
  • The usage directions and frequency for both products are the same.


  • These serums fall into different price ranges. The Ordinary HA serum is significantly more affordable than the one from La Roche-Posay. 
  • Hyalu B5 comes in two sizes (30 and 50 ml). However, The Ordinary HA serum is available in three sizes (30, 50, and 120 ml). 
  • The Hyaluronic Acid from The Ordinary has a simple and clean composition without potentially harmful ingredients. However, the Hyalu B5 Serum contains drying, irritating, and sensitizing ingredients like alcohol and fragrance.

Customer Reviews | Hyalu B5 Serum Reviews Before and After 

I was interested in trying the Hyalu B5 Serum, so I picked up a sample product to test how it would fare on my skin during my regular visits to my dermatologist. I have an oily skin type, so I needed this serum to be lightweight and fast-absorbing. To my relief, this serum ticks both boxes; however, it takes a little too long to absorb completely and dry. 

Speaking of results, this product definitely hydrates the skin well and gives you a healthy glow. It also temporarily blurs the appearance of smile lines around my mouth. Having used this product for a while, I’ve concluded that I can get similar benefits from my moisturizer or any other hydrating and barrier-repairing serum. Not to forget, this product has alcohol and fragrance, which I do not like. 

Hyalu B5 Serum Reviews Before and After

Let’s look at more reviews to see what others have said about this product. 

A user named Gabrielle noted, “I have always had a very dry skin type. It often gets itchy and peels due to the dryness. A friend suggested this serum to me, and I have been obsessed with it. I have been using it for nearly a year. It makes my skin very hydrated; over time, it has also tackled irritation effectively. This is a lovely product which I will definitely not stop using anytime soon.” 

Diandra stated, “This serum delivers on its claims. It hydrates and nourishes my skin well. The texture is also smooth and light. The only thing I don’t like is that it has a fragrance. I hope they come out with a fragrance-free version.”

Hyalu B5 Serum Reviews Before and After

Cindy noted, “I had high hopes for this serum as I use a few other products from La Roche-Posay, and they all suit my sensitive skin well. But, sadly, this product somehow makes my skin dry and itchy. It also has a heavy fragrance that lingers on my skin. I’m very disappointed because this product is pricey. I’m hoping they accept my return.”

Frequently Asked Questions | Hyalu B5 Serum Reviews

What is Hyalu B5 Serum used for? 

Hyalu B5 Serum is a skincare product that helps hydrate the skin and diminish the visible signs of aging. It claims to be the ideal solution for concerns like wrinkles, fine lines, dehydration, sensitivity, and loss of elasticity. It promises to provide short and long-term results to give youthful-looking and healthier skin.

What does Hyalu B5 Serum Do?

The Hyalu B5 Serum harnesses the power of multiple hydrators like Hyaluronic Acid, Glycerin, and Panthenol to deliver moisture to all parts of the skin. It also helps preserve water by reducing transepidermal water loss. Furthermore, it calms the skin, fortifies the moisture barrier, revives collagen levels, and promotes wound healing. 

Hyalu B5 Serum Reviews

How many drops of Hyalu B5 Serum should I use? 

The brand recommends using 3-4 drops of this serum once or twice daily. The amount of product can be reduced or increased depending on your skin tolerance. Those with dry skin may achieve the best results with the amount suggested, but for those with oily and combination skin types, you may use a little less to avoid feelings of heaviness. 

Is Hyalu B5 Serum good for acne? 

Hyaluronic Acid does not treat acne; however, it can be used to calm the skin, provide hydration, and reduce inflammation. However, it is best to avoid Hyalu B5 Serum if you have acne, as it contains drying and sensitizing ingredients. Instead, opt for a clean formula such as the one from The Ordinary, as discussed above.


We’ve finally reached the end of this review, and it’s time to share some final thoughts on the Hyalu B5 Serum from La Roche-Posay. Hyaluronic Acid is a potent ingredient that can offer skin-transforming benefits, and this serum aptly uses the power of this component. It further pairs it with other skin-loving ingredients for added benefits. Multiple happy Hyalu B5 Serum reviews attest that this product does what it says. 

However, it is essential to remember that this product is pricey compared to its contemporaries. Moreover, its composition features Alcohol Denat and Fragrance that experts suggest avoiding, especially if you have sensitive and acne-prone skin. It is recommended to consult your doctor to determine if it is best to use for your skin type and concerns. 

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