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Hydration Booster Hyaluronic Serum Plus

Hydration Booster Hyaluronic Serum Plus

Product Description

Product overview

Made in Various INTERNATIONAL

An ultra-lightweight, oil-free hyaluronic acid serum that combines sodium hyaluronate, polyglutamic acid, panthenol, marine algae, and fruit extracts to deliver up to 8 hours of deep hydration while visibly plumping and smoothing the skin on face and neck.

Oil-Free Cruelty-Free Paraben-Free Sulfate-Free Fragrance-Free Vegan-Friendly Reef-Safe Dermatologist Tested
Pregnancy
Yes
Fungal Acne
No
Comedogenic
1/5
Size
30ml / 1 fl oz
Price
~$55.00
Cost/ml
$1.83/ml
Skin Type
All Types
Key Active
Hyaluronic Acid
Real reviews · YouTube Shorts
Why it's different

Dual Hydration Technology

Combines sodium hyaluronate and sodium polyglutamate for multi-layer moisture binding that lasts up to 8 hours.

01

Texture & feel

SENSORY
Consistency
Lightweight Liquid
Scent
Subtle Coconut-Watermelon
Absorption
Under 30 Seconds
Finish
Dewy

Dual Hydration Technology

Combines sodium hyaluronate and sodium polyglutamate for multi-layer moisture binding that lasts up to 8 hours.

Marine Algae Complex

Padina Pavonica thallus extract from Mediterranean brown algae delivers deep-sea minerals and antioxidant protection.

Coconut Water Infusion

Natural coconut water and fruit extract rich in amino acids, minerals, and vitamins to nourish and hydrate skin.

Barrier Protection

Panthenol (Pro-Vitamin B5) strengthens the moisture barrier and soothes the skin while preventing transepidermal water loss.

Fruit Extract Blend

Watermelon fruit extract and baobab seed extract provide antioxidants and amino acids for a refreshed, radiant complexion.

Protein Peptide Matrix

Hydrolyzed soy protein, rice amino acids, and proline support collagen synthesis and improve skin texture and elasticity.

02

Safety & compatibility

SAFE
Pregnancy & Breastfeeding Safe

No retinoids, salicylic acid, hydroquinone, or chemical sunscreens. All ingredients are generally recognized as safe during pregnancy and breastfeeding.

Not Fungal Acne (Malassezia) Safe

Contains Sorbitan Isostearate, a fatty acid ester that can feed Malassezia yeast. Not recommended for fungal acne-prone skin.

Low Comedogenic Risk (1/5)

Oil-free formula with a very low comedogenic rating. Unlikely to clog pores for most skin types.

No Harsh Alcohols or Fragrances

Free from drying alcohols, synthetic fragrances, and common allergens. The subtle scent comes from natural coconut and watermelon extracts.

Compatible with Active Ingredients

Safe to layer with retinol, vitamin C, niacinamide, AHAs, and BHAs. Hyaluronic acid works synergistically with most actives.

Contains Soy-Derived Ingredient

Includes Hydrolyzed Soy Protein. If you have a soy allergy, perform a patch test before full application or consult your dermatologist.

03

Ingredient breakdown

INGREDIENTS

Sodium HyaluronateProven

The sodium salt form of hyaluronic acid, a naturally occurring molecule in the skin capable of binding up to 1,000 times its weight in water. Penetrates the skin to provide deep multi-layer hydration and visible plumping.

  • Mechanism: Humectant that attracts and retains water molecules within the skin's upper layers
  • Benefit: Clinically shown to improve skin hydration, reduce fine lines, and enhance barrier function
  • Research: Numerous peer-reviewed studies confirm its efficacy as a topical moisturizer
Gold-standard hydrating ingredient suitable for all skin types including sensitive skin.

Sodium PolyglutamatePromising

A biopolymer derived from fermented soybeans that provides intense moisture retention. Often called the "next-generation hyaluronic acid" due to its superior water-holding capacity and ability to inhibit hyaluronidase, the enzyme that breaks down natural HA in the skin.

  • Capacity: Can hold up to 5,000 times its weight in water, outperforming standard HA
  • Synergy: Works alongside hyaluronic acid to boost and extend hydration duration
  • Film-forming: Creates a breathable moisture-locking layer on the skin surface

Panthenol (Pro-Vitamin B5)Proven

A well-researched humectant and skin-conditioning agent that converts to pantothenic acid (vitamin B5) within the skin. Strengthens the moisture barrier, accelerates wound healing, and provides anti-inflammatory benefits.

  • Barrier: Promotes lipid synthesis to reinforce the skin's protective moisture barrier
  • Soothing: Proven anti-inflammatory properties help calm irritated or stressed skin
  • Penetration: Small molecular size allows deeper penetration than many other humectants

Padina Pavonica Thallus ExtractPromising

A Mediterranean brown algae extract rich in minerals, polysaccharides, and antioxidants. Helps stimulate the synthesis of glycosaminoglycans (including natural HA) within the skin for long-term hydration support.

  • Source: Harvested from Padina Pavonica, a calcified brown algae found in the Mediterranean Sea
  • Action: Contains fucoidans that support the skin's natural production of moisturizing compounds

Cocos Nucifera (Coconut) Water & Fruit ExtractProven

Natural coconut water is approximately 95% water with a rich mix of sugars, amino acids, minerals, vitamins, and phytohormones that nourish and hydrate the skin. The fruit extract provides additional conditioning benefits.

  • Nutrition: Contains cytokinins, vitamin C, and minerals that support healthy skin cell function
  • Hydration: Natural electrolytes and sugars enhance the skin's moisture balance

Citrullus Lanatus (Watermelon) Fruit ExtractPromising

Watermelon extract is rich in vitamins A, B, and C, along with amino acids like citrulline and lycopene. Provides antioxidant protection and helps brighten and hydrate the complexion.

  • Antioxidant: Lycopene content helps neutralize free radicals and protect against environmental stress
  • Amino acids: Citrulline supports collagen production and overall skin firmness

24 ingredients

Aqua/Water/Eau, Cocos Nucifera (Coconut) Water, Propanediol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Panthenol, Xanthan Gum, Glycerin, Sodium Polyglutamate, Cocos Nucifera (Coconut) Fruit Extract, Sorbitan Isostearate, Disodium EDTA-Copper, Citric Acid, Hydrolyzed Soy Protein, Rice Amino Acids, Proline, Citrullus Lanatus (Watermelon) Fruit Extract, Hydrolyzed Adansonia Digitata Seed Extract, Sodium Hyaluronate, Padina Pavonica Thallus Extract, PEG-8 Dimethicone, Sodium Benzoate, Potassium Sorbate, Phenoxyethanol, Ethylhexylglycerin

FREE FROM: Parabens, Sulfates, Synthetic Fragrances, Mineral Oil, Phthalates, Formaldehyde, Hydroquinone, Triclosan, Harsh Alcohols, Artificial Dyes, Gluten, Talc
04

Where it fits in your routine

ROUTINE
1
Cleanser
2
Toner
3
This Serum
4
Treatment
5
Moisturizer
6
Sunscreen (AM)

Apply after cleansing and toning, before heavier treatments and moisturizer. Can also be mixed into your favorite MONAT moisturizer for an extra hydration boost.

05

How to use

HOW TO USE
1

Cleanse Your Skin

Start with a freshly cleansed face and neck. Pat skin until slightly damp — hyaluronic acid works best when applied to damp skin.

2

Fill the Dropper

Squeeze the dropper to fill it with serum. You will need 3–4 drops for your entire face and neck area.

3

Apply & Massage

Dispense 3–4 drops onto your fingertips and gently press into your face and neck. Use upward, outward motions to distribute evenly.

4

Pat for Absorption

Use your palms to gently pat the serum into your skin for better absorption. Wait 30 seconds before applying the next step in your routine.

5

Follow with Moisturizer

Seal in the hydration with your preferred moisturizer. Use morning and evening for optimal results. Always follow with SPF in the morning.

06

Who is it for?

WHO

Perfect for you if:

  • Your skin feels dehydrated, tight, or lacks plumpness
  • You want a lightweight, oil-free serum that won't feel greasy
  • You have fine lines or dullness caused by dehydration
  • You need a hydrating serum safe for pregnancy and breastfeeding
  • You prefer clean-beauty, cruelty-free formulas
  • You want a versatile serum that pairs well with any moisturizer

Consider alternatives if:

  • You have fungal acne (malassezia) — contains Sorbitan Isostearate
  • You have a soy allergy — contains Hydrolyzed Soy Protein
  • You prefer a higher concentration of pure HA (e.g. 2%+)
  • You want a completely fragrance-free formula with zero scent
  • You need a budget-friendly option under $20
  • You prefer products with disclosed active concentrations
07

Skin type compatibility

SKIN TYPES
Oily Skin
Excellent

Oil-free, lightweight formula absorbs rapidly without adding shine. Balances natural oil production while delivering deep hydration.

Dry Skin
Good

Provides excellent hydration boost but very dry skin types will still need a rich moisturizer on top to lock in moisture and prevent TEWL.

Combination Skin
Excellent

Lightweight texture won't overwhelm oily zones while delivering needed hydration to dry areas. Balances well across the face.

Sensitive Skin
Good

Free from common irritants, fragrances, and harsh alcohols. Panthenol provides soothing benefits. Patch test recommended for very reactive skin.

Acne-Prone Skin
Good

Non-comedogenic and oil-free, suitable for most acne-prone skin. However, not fungal acne safe due to Sorbitan Isostearate content.

08

Results timeline

MONTH 2+
Immediately

Instant Hydration & Plumping

Skin feels immediately hydrated and looks visibly plumper. Dewy, refreshed appearance right after application as hyaluronic acid binds water to the skin surface.

90% noticed instant hydration
Week 1–2

Smoother, Softer Texture

Consistent use begins to improve overall skin texture. Skin feels noticeably softer and smoother to the touch. Fine dehydration lines start to diminish.

85% noticed softer skin
Week 2–4

Visible Plumping & Barrier Improvement

Fine lines appear visibly reduced. Skin barrier function is strengthened by panthenol and polyglutamic acid. Overall complexion looks more radiant and healthy.

78% noticed plumper skin
Month 2+

Sustained Hydration & Resilience

Long-term moisture balance improves. Skin retains hydration more effectively throughout the day. Environmental resilience is enhanced with continued daily use.

72% noticed lasting improvement
09

Ratings by platform

460+ REVIEWS
Amazon
4.3
Rating
150+
Reviews
Main complaint: High price point for a 30ml bottle compared to drugstore alternatives
MONAT Website
4.8
Rating
200+
Reviews
Main complaint: Subtle scent that some users describe as slightly unusual or funky
Walmart
4.2
Rating
30+
Reviews
Main complaint: Third-party sellers pricing above MSRP with varying shipping times
Poshmark / eBay
4.5
Rating
80+
Reviews
Main complaint: Risk of counterfeit or expired products from unauthorized resellers
10

Pros & cons

BALANCED

Praised

  • Immediately plumps and hydrates without any greasy residue
  • Lightweight, oil-free formula suitable for all skin types
  • Dual HA + polyglutamic acid provides superior moisture retention
  • Doesn't cause breakouts or additional oiliness
  • Clean formula: paraben-free, sulfate-free, cruelty-free
  • Versatile — works alone or mixed with moisturizer
  • 8-hour hydration backed by clinical testing
  • Elegant dropper packaging allows precise application

Criticized

  • Premium price (~$55 for 30ml) compared to competitors
  • Small bottle runs out quickly with twice-daily use
  • Subtle scent some users find slightly unusual
  • Not fungal acne safe due to Sorbitan Isostearate
  • Active ingredient concentrations not disclosed
  • Primarily sold through market partners (MLM distribution)
  • Dry skin types may need additional moisturizer on top
  • Contains soy derivative (allergen concern for some)
11

Budget-friendly alternatives (dupes)

DUPES
82% Match
Hyaluronic Acid 2% + B5 Serum
$9.90
Budget Pick

Contains 5 forms of HA at a stated 2% concentration plus ceramides and pro-vitamin B5. Simpler formula without polyglutamic acid, marine algae, or fruit extracts, but delivers strong hydration at a fraction of the price.

75% Match
Hydro Boost Hyaluronic Acid Serum
$19.99
Budget Pick

Drugstore-accessible HA serum with a lightweight gel formula. Contains purified hyaluronic acid and vitamin B5. Lacks the marine algae, polyglutamic acid, and botanical extracts found in the MONAT serum.

70% Match
Hyalu B5 Face Serum with Hyaluronic Acid
$37.99
Mid-Range

French pharmacy formula with two types of HA plus vitamin B5 and madecassoside. Dermatologist-recommended with stronger clinical backing but lacks the coconut water infusion and polyglutamic acid of the MONAT serum.

12

Comparison with competitors

SIDE-BY-SIDE
Pycnogenol 5%
Key Actives 5 Forms of HA + B5 + Ceramides
Size 30ml
HA Concentration 2% (Disclosed)
Oil-Free Yes
Unique Ingredients Ceramides, Red Algae Extract
Fungal Acne Safe No (Polysorbate 20)
Cost per ml $0.33
Hyalu B5 Eyes Serum
Key Actives 2 Forms of HA + B5 + Madecassoside
Size 30ml
HA Concentration Not Fully Disclosed
Oil-Free Yes
Unique Ingredients Madecassoside (Cica), Thermal Water
Fungal Acne Safe Yes
Cost per ml $1.27
Hydration Booster 10X
Key Actives HA + Soybean + Green Tea + Aloe
Size 53ml (1.8 fl oz)
HA Concentration Not Disclosed
Oil-Free Yes
Unique Ingredients Green Tea, Aloe Vera, 10 Hydrators
Fungal Acne Safe Varies by formula
Cost per ml $0.53
13

Storage & shelf life

12 MONTHS
Period After Opening (PAO)

12 months after opening

Storage

Store in a cool, dry place away from direct sunlight and extreme heat. Keep the cap tightly closed after each use.

Packaging

Glass dropper bottle with a pipette applicator for precise dispensing

Travel Friendly

Yes — 30ml (1 fl oz) is well under the 100ml TSA carry-on limit

13

Frequently asked questions

FAQ

Yes. The MONAT Hydration Booster Hyaluronic Serum Plus does not contain retinoids, salicylic acid, hydroquinone, chemical sunscreens, or any other ingredients commonly flagged as unsafe during pregnancy or breastfeeding. Its hydrating actives — hyaluronic acid, polyglutamic acid, panthenol, and glycerin — are all considered safe for use during pregnancy. However, as with any skincare product, consult your healthcare provider if you have specific concerns.

No. This serum contains Sorbitan Isostearate, a fatty acid ester derived from isostearic acid that can feed Malassezia yeast. If you are prone to fungal acne (pityrosporum folliculitis), this product is not recommended. Consider fungal acne-safe alternatives such as La Roche-Posay Hyalu B5 Serum or a pure hyaluronic acid serum without ester-based emulsifiers.

Yes. Hyaluronic acid and polyglutamic acid are gentle hydrating ingredients that pair well with virtually all active ingredients, including retinol, vitamin C (L-ascorbic acid), niacinamide, AHAs (glycolic, lactic), and BHAs (salicylic acid). In fact, using this serum alongside stronger actives can help offset potential dryness or irritation by boosting skin hydration. Apply the serum first, let it absorb, then follow with your active treatment.

This serum is formulated for all skin types. It excels on oily and combination skin thanks to its oil-free, lightweight texture that hydrates without adding grease. Dry skin types benefit from the deep hydration but may want to layer a richer moisturizer on top. Sensitive skin types appreciate the fragrance-free, paraben-free formula with soothing panthenol. The only caution is for those with fungal acne or soy allergies.

Instant results include immediate hydration and a plumper appearance. Within 1–2 weeks of consistent twice-daily use, most users report softer, smoother skin texture. By week 4, visible improvements in fine lines and overall radiance are commonly observed. Based on MONAT's 14-day consumer study with 35 participants, the majority reported boosted hydration and visibly plumper skin within two weeks.

Apply this serum as step 3 in your routine: after cleansing and toning, but before heavier serums, treatments, moisturizer, and sunscreen. For best results, apply 3–4 drops to slightly damp skin morning and evening. You can also mix a few drops directly into your moisturizer for an added hydration boost.

This serum has a comedogenic rating of 1 out of 5, meaning it has a very low risk of clogging pores. The oil-free formula relies on water-based humectants like hyaluronic acid, glycerin, and panthenol rather than heavy oils or occlusives. Most users, including those with acne-prone skin, report no breakouts. However, if you have extremely reactive or fungal acne-prone skin, proceed with caution due to the Sorbitan Isostearate content.

The recommended Period After Opening (PAO) is 12 months. Store in a cool, dry place away from direct sunlight to maximize shelf life. The glass dropper bottle helps protect the formula from contamination. At the recommended 3–4 drops twice daily, a 30ml bottle typically lasts approximately 2–3 months of regular use.

— Skincarisma verdict
4.0 / 5 ★★★★☆

Verdict: The MONAT Hydration Booster Hyaluronic Serum Plus is a well-formulated hydrating serum with an appealing combination of sodium hyaluronate, polyglutamic acid, marine algae, and nourishing fruit extracts. It delivers on its promise of lightweight, oil-free hydration that lasts up to 8 hours. The clean, cruelty-free formula with panthenol and botanical extracts makes it a solid option for those seeking premium hydration. However, the undisclosed HA concentration, premium price point (~$55 for 30ml), and the presence of Sorbitan Isostearate (making it unsuitable for fungal acne) are notable drawbacks. Budget-conscious shoppers can find comparable hydration from The Ordinary HA 2% + B5 at a fraction of the cost. Best suited for those already invested in the MONAT ecosystem or seeking a luxurious, multi-active hydrating serum.

Product Overview

question
lightbulb What are Quick Product Notes?

Quick product notes are a great way to check if a product is free from commonly avoided ingredients by skincare enthusiasts. These preferences come about for different reasons depending on the ingredient such as personal experiences, sensitivities, health preferences & etc.

muscle Pro Tip Alert!

Just because a product is not free from a common preference does not mean it's a bad product! You can make a personal decision whether or not you want to use a product that contains these ingredients or not - click the labels of the preference to read more about them.

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Quick Product Notes

Click on icons for more information
question
lightbulb What are Notable Effects & Ingredients?

Ever used a product that promised a certain effect but provided no results? It might not have contained any notable ingredients that could have been responsible for that promised effect. It doesn't matter what the marketing or packaging «promises» it can do, if it doesn't contain anything that can help - then the likelihood of it helping is low.

We help you identify key notable ingredients that have been shown to help with effects such as acne-fighting, brightening, UV-protection, wound healing & anti-aging to help you achieve your skincare goals smarter. Please note that different notable ingredients have varying levels of research behind them, some are extremely well proven yet some have mixed research in their efficacy.

muscle Pro Tip Alert!

Just because a product doesn't contain any notable ingredients doesn't mean it's bad. And a product with notable ingredients (or even many) doesn't necessarily guarantee the efficacy of the product performing these effects either. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine this.

Be smart and use this as just a starting point for you to make more informed and smarter choices and compare it with reviews to see if the product is right for you

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Notable Effects & Ingredients

anti-aging Anti-Aging from 1 ingredient(s):
Citric Acid
brightening Brightening from 2 ingredient(s):
Glycerin Citric Acid
wound Promotes Wound Healing from 4 ingredient(s):
Panthenol Glycerin Citric Acid Sodium Hyaluronate
question
lightbulb What are Ingredients Related to Skin Type?

Why are some products great for some people and horrible for others? Well everyone has different skin types and different reactions to the same ingredients.

We've identified a range of ingredients that are commonly regarded as potentially good or bad for those with Dry, Oily/Acne-Prone or Sensitive skin.

muscle Pro Tip Alert!

A product that contains good or bad ingredients for your skin type doesn't always flat out make the entire product good or bad for your skin. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine your skins reaction.

One of the best ways to use this section is to troubleshoot products you've had bad experiences with in the past. Check if it contains any of the marked ingredients to point out suspect ingredients to avoid in the future!

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Ingredients Related to Skin Types

Click on icons for more information
dry-skin Dry Skin
3
oily-skin Oily/Acne-Prone Skin
1
sensitive-skin Sensitive Skin
question
lightbulb What is the Ingredient Safety Breakdown?

Ingredient Safety Breakdown refers to the percentage % of ingredients in different risk categories as classified by EWG (Environment Working Group) if they are available. There are almost endless cosmetic ingredients and they are one of the few organisations globally that have assigned ratings to a lot of the more commonly used ingredients which is why we reference them.

muscle Pro Tip Alert!

EWG is seen by many to be more on the alarmist side in their assignment of health ratings resulting in rating ingredients as riskier than they actually are. We recommend using this a reference point rather than a strict guide of ingredient safety and to always do further research if into ingredients that you may find suspect.

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Ingredient Safety Breakdown

EWG Health Ratings
Low risk
Medium risk
High risk
Unknown risk
45% 12% 41%

Product ingredient list

Showing first 5 of 24 ingredients
EWG CIR Ingredient Name & Cosmetic Functions Notes
1 Unknown
Water
Solvent, Skin Conditioning
0 Unknown
Cocos Nucifera Water
Masking
Hydrating
Irritation
1 Unknown
Propanediol
Solvent, Viscosity Controlling, Viscosity Decreasing Agent
0 Unknown
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion Stabilising
1 A
Panthenol
Skin Conditioning, Antistatic Agent, Hair Conditioning
Promotes Wound Healing
Hydrating
Redness
Irritation
VIEW ALL INGREDIENTS