Hyaluronic Acid Aqua Booster

Here's the uncomfortable part about reviewing 111Skin's Hyaluronic Acid Aqua Booster: the formula is genuinely fine. There's nothing wrong with it. The INCI reads like a textbook hydrating serum — glycerin, aloe, a natural moisturizing factor complex built from sodium lactate, sodium PCA, urea, and glycine, plus sodium hyaluronate, niacinamide, and a trace of licorice root extract. It's fragrance-free, alcohol-free, and friendly to every skin type I can think of. If you applied it blind and asked a dermatologist whether it was a well-formulated hydrating serum, they'd say yes. The problem is what 111Skin charges for it, and why.

At $135 for 20ml, this serum is priced like a boutique acid treatment or a serious retinol. The actual ingredients in it are available in serums that cost $15, $25, or $40 depending on how much of a mid-tier markup you're willing to pay. The Ordinary Hyaluronic Acid 2% + B5 covers the HA story for under $10. Inkey List's Hyaluronic Acid Serum adds some of the NMF components for similar money. La Roche-Posay's Hyalu B5 serum brings niacinamide and panthenol in at around $40. None of these are 111Skin, but the measurable hydration and barrier support they deliver is within shouting distance of what the Aqua Booster actually does on the skin.

So what are you paying the premium for? The brand, the packaging, and a very specific credibility story. 111Skin was founded in 2012 by Dr. Yannis Alexandrides, a Harley Street plastic surgeon whose client list reportedly includes royals, celebrities, and the kind of private-jet clientele that stops at Harrods for skincare. The brand's original proposition was that these formulations were developed to support his surgical patients during recovery, and that story earned 111Skin placement in luxury retailers across the world. The cryo sheet masks went viral around 2015-2016 and turbocharged the brand's visibility — if you've ever seen a celebrity wearing a silver or rose-gold face mask on Instagram, you've probably seen 111Skin.

The Aqua Booster sits in the lineup as what the brand probably considers an 'approachable' price point — $135 is genuinely affordable by 111Skin standards, since their sheet masks run over $100 apiece and some serums cross $400. Within the brand, this is the entry ticket. Within the broader skincare market, it's a clear luxury purchase where most of the money is buying a brand experience rather than ingredients.

The experience, to be fair, is genuinely pleasant. The texture is a lightweight watery serum that absorbs almost instantly, plumping the skin on contact from the glycerin and NMF components, and leaving no residue or sticky film. The dropper bottle is beautiful, the packaging feels substantial, and the ritual of using it every morning has that small-luxury element that makes expensive skincare feel worth it to the people who love it. Fragrance-free means no barrier to sensitive skin, and the formula is mild enough to layer with any other actives in your routine.

The dermatology perspective is honest. If a patient asked a board-certified dermatologist whether 111Skin's Hyaluronic Acid Aqua Booster would hydrate their skin, the answer would be yes. If they asked whether it would do anything that a well-formulated $30 HA serum wouldn't do, the answer would almost certainly be no. The NMF blend is particularly well-chosen — sodium lactate, sodium PCA, urea, and glycine together deliver more reliable surface hydration than hyaluronic acid alone, which is actually one of the formula's smarter formulation choices. But 'smart formulation choice' doesn't translate into 'unique enough to justify a 4-5x markup over comparable serums.'

The users who buy this serum tend to fall into two camps. The first is people who already own other 111Skin products and want the full routine experience — for them, the Aqua Booster is the friendly, low-risk addition that pairs with the brand's more dramatic products. The second is people who are buying into the luxury skincare category generally and find $135 serums emotionally reasonable. For both groups, the value math works because they're buying an experience and a brand alignment, not just a hydrator. That's a perfectly legitimate reason to buy a product, and there's no shame in it — but it's worth being clear-eyed about it.

For anyone outside those two groups, particularly anyone buying primarily on ingredient density per dollar, this is not the right product. The formula is good. The price is not. And in a hydrating serum category where the best-in-class options are now available for under $30, a $135 serum needs to bring something genuinely unique to the table — a novel delivery system, an ingredient that doesn't exist elsewhere, a clinically proven efficacy advantage. Aqua Booster doesn't, and 111Skin doesn't claim it does. You're paying for the brand, and that transaction only makes sense if the brand itself is what you want.

Formula

The Science

The hydration story in this formula rests on two complementary mechanisms. The first is humectant attraction of atmospheric water, primarily via glycerin (second on the INCI) and sodium hyaluronate. Glycerin is one of the most-studied humectants in dermatology, with decades of research supporting its ability to draw water into the stratum corneum and improve barrier function. Hyaluronic acid functions similarly, with the added property that high-molecular-weight forms sit on the skin surface while low-molecular-weight forms can penetrate slightly deeper — 111Skin markets their HA as low-molecular-weight, though the clinical significance of this distinction is debated.

The second mechanism is the natural moisturizing factor complex. The skin's stratum corneum naturally contains a mixture of humectant compounds — amino acids, lactate, PCA, urea, and small sugars — that collectively hold water in the outer skin layers. These compounds are depleted in dry and aged skin, which contributes to the barrier dysfunction those skin types experience. Topical replacement of NMF components is a well-established strategy for restoring barrier function and has reasonable clinical evidence, particularly for urea, which has been studied at a range of concentrations for its humectant and mild keratolytic effects.

Niacinamide's inclusion in the formula adds a third mechanism: stimulation of ceramide synthesis and modest anti-inflammatory effects. Research published across multiple dermatology journals has established that topical niacinamide at 2-5% concentrations supports skin barrier function, reduces transepidermal water loss, and can contribute to hyperpigmentation management. The concentration in the Aqua Booster, based on its INCI position, is likely below the 4-5% threshold used in most clinical studies, so the contribution is supportive rather than primary.

The licorice root extract adds a minor soothing and potentially brightening element through glycyrrhizin and glabridin, compounds with anti-inflammatory and melanogenesis-modulating properties in laboratory studies. At the concentration implied by its INCI position, the clinical significance is modest. None of these mechanisms are unique to 111Skin — they're the standard building blocks of a well-formulated hydrating serum, which is exactly what the Aqua Booster is.

Dermatologist Perspective

Dermatologists generally view hydrating serums like the 111Skin Aqua Booster as interchangeable with other well-formulated humectant products. Board-certified dermatologists note that hyaluronic acid, NMF components, and niacinamide are commodity ingredients with excellent safety profiles and established efficacy — but the choice of serum within that category is typically driven by budget and personal preference rather than clinically meaningful differences between brands. For patients seeking hydration for dry skin, dermatologists often recommend simpler, cheaper options from pharmacy and mid-tier brands, reserving discussion of luxury brands to cases where the patient has already decided on that tier.

Guidance

111Skin was launched in 2012 by Dr. Yannis Alexandrides, a Greek plastic surgeon operating from London's Harley Street. The brand built its reputation on post-procedure recovery formulations for his patients and the now-iconic cryo sheet masks that went viral on Instagram around 2015-2016. The Hyaluronic Acid Aqua Booster joined the range as a more affordable entry point into the brand, though 'affordable' is relative at $135 for 20ml.

About 111Skin Established Brand (5–20 years)

111Skin was founded in 2012 by Dr. Yannis Alexandrides, a Harley Street plastic surgeon, positioning itself as a clinical-luxury brand with formulations originally developed to support patient recovery. The brand is widely stocked in luxury retailers including Harrods, Neiman Marcus, and Space NK, and is best known for its cryo sheet masks.

Brand founded: 2012 · Product launched: 2016

Myth vs. Reality

Myth

Expensive hyaluronic acid serums deliver more hydration than cheap ones.

Reality

Hyaluronic acid is one of the most commoditized ingredients in skincare. The NMF components in this formula are well-formulated but are not exclusive to the luxury tier. A $15 HA serum with a good NMF blend delivers comparable hydration.

Myth

Plastic surgeon brands are always better formulated.

Reality

Physician branding is a credibility marker, not a guarantee of formulation superiority. Some physician lines produce genuinely innovative formulas; many use the credential to justify premium pricing on conventional ingredients.

FAQ

Common Praise

"Noticeable immediate plumping and hydration"

"Lightweight non-sticky texture"

"Layers beautifully under moisturizer"

"Fragrance-free and well-tolerated"

"Luxe packaging and unboxing experience"

Common Complaints

"Extremely expensive for the ingredient complexity"

"20ml bottle is small"

"Similar ingredients available at drugstore price points"

"Primarily pays for the brand, not the formulation"

Notable Endorsements

Celebrity and royal client baseHarrods and Space NK bestseller

Appears In

best luxury hydrating serum best hyaluronic acid serum for dry skin best fragrance free luxury serum

Related Conditions

dryness dehydration

Related Ingredients

hyaluronic acid niacinamide urea amino acids