Best Hyaluronic Acid Serums for Deep, Lasting Hydration
The best hyaluronic acid serum depends on whether you prioritize a stated concentration, multiple molecular weights, barrier support, or a lightweight hydrating formula. Naturium lists a 5% quadruple hyaluronic acid formula, while The Ordinary lists 2% plus B5 and ceramides. Cosmedica and Good Molecules are other direct hydration options. Olay is a broader glow serum, not a dedicated hyaluronic acid serum based on the provided ingredient details.
| Product | Best For | Key Detail |
|---|---|---|
| Naturium Quadruple Hyaluronic Acid Serum | Shoppers comparing stated concentration | 5% and four molecular weights |
| The Ordinary Hyaluronic Acid 2% + B5 | Hydration with barrier support | 2% hyaluronic acid, B5, and ceramides |
| Cosmedica Pure Hyaluronic Acid Serum | Those seeking a product marketed as pure hyaluronic acid | Hydration and plumping claims |
| Good Molecules Hyaluronic Acid Serum | Lightweight daily hydration | Water-based, fast-absorbing formula |
| Olay Super Serum | Multi-benefit glow care | Hydrating formula with several other actives |
Naturium Quadruple Hyaluronic Acid Serum

Best for: Buyers who want a clearly stated percentage and a formula featuring more than one molecular weight. Naturium lists 5% hyaluronic acid and four different molecular weights, with a gel-like texture intended to hydrate and leave skin looking plumper and more supple.
The brand says the serum suits aging, combination, dry, sensitive, and blemish-prone skin. It can be used daily on the face, neck, and chest, morning and night, followed by moisturizer. This makes it a strong choice when you want a dedicated hydrating serum with specific formula details to compare.
Limitation: The product instructions advise shaking well and patch testing before use. The listed information does not specify the proportion of each molecular weight.
The Ordinary Hyaluronic Acid 2% + B5

Best for: Shoppers who want hydration paired with ingredients positioned to support the skin barrier. This serum lists 2% hyaluronic acid, vitamin B5, and ceramides. Its product details describe immediate, lasting hydration and a smoother, plumper-looking complexion.
The ceramides are described as helping lock in moisture and support the skin’s protective barrier. The formula is also presented as helping minimize the appearance of fine dry lines and support skin smoothness. Choose this option if barrier support is a priority alongside hydration rather than selecting on hyaluronic acid percentage alone.
Limitation: The listed concentration is 2%, lower than Naturium’s stated 5%. A higher listed percentage does not, by itself, establish which formula will suit an individual best.
Cosmedica Pure Hyaluronic Acid Serum

Best for: Buyers looking for a serum marketed as pure hyaluronic acid with hydration and plumping claims. Cosmedica describes its formula as vegan and cruelty-free and says it is suitable for all skin types. The product information highlights moisture for dry patches and a more radiant-looking complexion.
The brand also says the serum can help skin appear softer, smoother, and plumper, and describes support for the look of fine lines and uneven tone. It is a relevant option if you want a direct hydration product rather than a multi-active glow serum.
Limitation: The supplied product details do not give a specific hyaluronic acid percentage. Claims such as holding up to 1,000 times its weight in water are brand statements, not a concentration comparison with the other products here.
Good Molecules Hyaluronic Acid Serum

Best for: People seeking a lightweight, water-based serum for daily hydration. Good Molecules describes its formula as fast absorbing and says it gives skin a plumping boost of moisture. Continued use is presented as supporting lasting hydration and firmer-looking skin.
This is a straightforward choice when texture and ease of layering matter more than a published concentration. Its product description focuses on hydrating skin and improving the appearance of fine lines, without listing additional active ingredients or a specific percentage.
Limitation: The provided details do not identify the hyaluronic acid concentration or molecular weights, so shoppers cannot use those specifications to compare it directly with Naturium or The Ordinary.
Olay Super Serum

Best for: Buyers who want a multi-benefit serum focused on glow, tone, and texture, rather than a dedicated hyaluronic acid formula. Olay lists niacinamide, vitamin C, collagen peptide, vitamin E, and alpha hydroxy acid (AHA), with claimed benefits including hydration, brightening, smoothing, and firming.
It can be considered as a broader skincare alternative if those additional goals matter more than selecting a serum by hyaluronic acid content. The listed features describe a hydrating formula, but do not identify hyaluronic acid as an ingredient.
Limitation: The provided product information does not state that this serum contains hyaluronic acid or give a hyaluronic acid percentage. Choose one of the dedicated options above if that ingredient is your main requirement.
Buying Guide: How to Choose a Hyaluronic Acid Serum
Does a higher percentage mean a better serum?
Not necessarily. Among these options, Naturium states 5% and The Ordinary states 2%. The other dedicated serums do not provide a percentage in the supplied details. Concentration is one comparison point, but texture, other ingredients, directions, and personal skin response also matter. Avoid treating the word “pure” or a hydration claim as proof of a specific percentage.
Should you look for multiple molecular weights?
Naturium specifically lists four molecular weights, while the supplied descriptions for the other products do not give comparable details. If that specification matters to you, Naturium provides the clearest information. The listing does not explain the amount of each type, so the detail alone cannot predict an individual result.
What else should you compare?
- Barrier support: The Ordinary lists ceramides and B5 in addition to hyaluronic acid.
- Texture: Good Molecules describes a lightweight, water-based formula; Naturium describes a gel-like texture.
- Routine: Naturium’s directions say to apply morning and night and follow with moisturizer.
- Extra goals: Olay lists several ingredients for glow and tone, but the supplied details do not establish it as a hyaluronic acid serum.
- Sensitivity: Naturium advises patch testing. Introduce a new skincare product carefully, especially if your skin is reactive.
Frequently Asked Questions
Which serum here has the highest stated hyaluronic acid percentage?
Naturium lists 5%, the highest stated percentage among these products. The Ordinary lists 2%; the other supplied descriptions do not state a percentage.
Which option includes ceramides?
The Ordinary Hyaluronic Acid 2% + B5 lists ceramides and describes them as supporting the skin barrier and helping lock in moisture.
Is Olay Super Serum a hyaluronic acid serum?
The supplied Olay ingredient details list niacinamide, vitamins C and E, collagen peptide, and AHA, but do not identify hyaluronic acid. It is better considered a multi-benefit glow serum based on that information.
Can hyaluronic acid serum replace moisturizer?
The supplied Naturium directions recommend following the serum with a moisturizer. A serum is therefore best used as part of a routine rather than assumed to replace moisturizer.
Which serum is described as lightweight and water-based?
Good Molecules describes its hyaluronic acid serum as lightweight, water-based, and fast absorbing.