Hyaluronic Acid Serum
Hyaluronic Acid Serum
Product Description
Product overview
A lightweight, water-based hyaluronic acid serum that draws moisture deep into the skin for long-lasting hydration. Formulated with two forms of hyaluronic acid at different molecular weights, this serum penetrates multiple layers to combat dehydration and loss of firmness, leaving skin smooth, supple, and plump.
Multi-Weight Hydration
Contains two forms of hyaluronic acid with different molecular weights to hydrate multiple skin layers simultaneously.
Texture & feel
SENSORYMulti-Weight Hydration
Contains two forms of hyaluronic acid with different molecular weights to hydrate multiple skin layers simultaneously.
Minimal Formula
Only 9 carefully selected ingredients - no fillers, no irritants, no unnecessary additives. Just effective hydration.
Clean & Vegan
Free from parabens, sulfates, silicones, oils, and fragrances. Leaping Bunny certified cruelty-free and 100% vegan.
Antioxidant Protection
Formulated with Vitamin E (Tocopherol) to protect skin from free radical damage while deeply hydrating.
Safety & compatibility
SAFEHyaluronic acid is naturally occurring in the body and considered completely safe during pregnancy and breastfeeding. No retinoids, salicylic acid, or hydroquinone.
Free from fatty acids, oils, esters, polysorbates, and fermented ingredients that feed malassezia yeast. Confirmed safe by ingredient analysis.
Fragrance-free, alcohol-free, and free from common allergens. Minimalist formula reduces risk of irritation.
Comedogenic rating of 0/5. Will not clog pores or cause breakouts. Safe for acne-prone skin.
Apply to damp skin for optimal absorption. Hyaluronic acid draws moisture from its surroundings - damp skin provides that moisture source.
Always follow with a moisturizer to seal in hydration. In dry climates, HA can pull moisture from skin if not locked in properly.
Ingredient breakdown
INGREDIENTSSodium Hyaluronate 1%Proven
The sodium salt form of hyaluronic acid - a naturally occurring molecule that can hold up to 1000x its weight in water. This formula contains two molecular weights for multi-depth hydration.
- Mechanism: Acts as a humectant, drawing water from the environment and deeper skin layers to the surface
- Benefits: Plumps fine lines, improves skin texture, maintains moisture barrier
- Research: Clinically proven to increase skin hydration and reduce transepidermal water loss
GlycerinProven
A powerful humectant that's naturally found in skin. Studies show glycerin may be even more effective than hyaluronic acid at maintaining skin hydration.
- 2016 Study: Found glycerin to be more effective as a humectant than both AHAs and hyaluronic acid
- Properties: Antimicrobial, antiviral, helps strengthen skin barrier
- Safety: Comedogenic rating 0, non-irritating
PropanediolSupporting
A corn-derived glycol that softens, hydrates, and smooths the skin while improving product texture and absorption.
- Function: Solvent, humectant, and texture enhancer
- Safety: Non-sensitizing, non-irritating, derived from natural sources
Tocopherol (Vitamin E)Proven
A fat-soluble antioxidant that protects skin from free radical damage, strengthens the skin barrier, and maintains healthy skin lipids.
- Benefits: Antioxidant protection, reduces UV damage, soothes irritation
- Synergy: Works with hyaluronic acid to enhance hydration retention
9 ingredients
Water, Propanediol, Glycerin, Sodium Hyaluronate, Hydroxyacetophenone, Sodium Citrate, Citric Acid, Ethylhexylglycerin, Tocopherol
Where it fits in your routine
ROUTINEApply after cleansing and toning, before heavier serums and moisturizers. Use AM and PM daily. Best applied to damp skin.
How to use
HOW TO USEPrep Your Skin
After cleansing, leave your skin slightly damp or spritz with water/toner. This gives the hyaluronic acid moisture to draw from.
Apply the Serum
Dispense 2-3 drops into your palm. Gently pat and press onto face, neck, and décolletage. A little goes a long way.
Wait 30 Seconds
Allow the serum to absorb before continuing with your routine. The lightweight formula absorbs quickly without sticky residue.
Seal with Moisturizer
Always follow with a moisturizer to lock in hydration. This prevents the HA from drawing moisture out of your skin in dry environments.
Who is it for?
WHOPerfect for you if:
- You want affordable, effective hydration
- You have dehydrated or dull skin
- You prefer minimal, clean formulas
- You're pregnant or breastfeeding
- You have fungal acne or acne-prone skin
- You want a lightweight base serum
- You have sensitive or reactive skin
- You need a product that layers well under makeup
Consider alternatives if:
- You want added anti-aging peptides
- You prefer thicker, richer textures
- You need B5/panthenol for barrier repair
- You want multiple molecular weights (5+)
- You live in extremely dry climates without proper sealing
- You prefer all-in-one products
Skin type compatibility
SKIN TYPESLightweight, water-based formula absorbs instantly without adding shine or greasiness. Won't clog pores.
Provides excellent hydration boost but requires a rich moisturizer on top for very dry skin types.
Balances hydration across different face zones without being too heavy on oily areas or too light on dry patches.
Fragrance-free, minimal 9-ingredient formula. No common irritants or allergens. Extremely gentle.
Non-comedogenic (0/5 rating), oil-free, and fungal acne safe. Won't trigger breakouts or feed malassezia.
Results timeline
2+ MONTHSInstant Hydration Boost
Skin feels immediately plumper, smoother, and more hydrated. The lightweight formula absorbs within 30 seconds leaving a dewy finish.
95% noticed instant hydrationImproved Skin Texture
Consistent daily use leads to noticeably softer, smoother skin. Fine dehydration lines begin to diminish as skin holds moisture better.
78% saw texture improvementPlumper, Healthier Skin
Skin appears more plump and radiant. The moisture barrier is strengthened, reducing transepidermal water loss. Makeup applies more smoothly.
85% reported healthier-looking skinLong-Term Hydration Benefits
Sustained improvement in skin hydration levels. Fine lines appear reduced, skin maintains bounce and dewiness throughout the day.
89% continued daily useRatings by platform
12K+ REVIEWSPros & cons
BALANCEDPraised
- Extremely affordable ($6 for 30ml)
- Lightweight, non-sticky formula
- Absorbs quickly (30 seconds)
- Minimal, clean 9-ingredient list
- Fragrance-free and gentle
- Layers beautifully under makeup
- Fungal acne and pregnancy safe
- Visible hydration results immediately
- Better texture than The Ordinary
- No tacky or sticky residue
Criticized
- Only 1% HA (competitors have 2%)
- No added B5/panthenol for barrier repair
- Single HA source (vs 5-form competitors)
- May not be enough for very dry skin alone
- Small 30ml bottle used quickly
- No peptides for anti-aging
- Requires moisturizer to seal
Budget-friendly alternatives (dupes)
DUPESHigher HA concentration (2%) with multiple molecular weights plus panthenol (B5) for barrier repair. Slightly stickier texture that some find less elegant.
Contains 2% HA plus Matrixyl 3000 peptide for added anti-aging benefits. More watery, runnier consistency. Uses up faster.
Contains ceramides and vitamin B5 for enhanced barrier repair. More occlusive formula. Better for dry skin but pricier.
Gel-like texture with added fragrance. Contains glycerin and trehalose. More expensive with similar hydration but added scent may irritate sensitive skin.
Comparison with competitors
SIDE-BY-SIDEStorage & shelf life
12 MONTHS12 months after opening
Store in a cool, dry place away from direct sunlight. No refrigeration required.
Glass dropper bottle with recyclable packaging. Protects formula from light degradation.
Yes - 30ml bottle is under 100ml TSA liquid limit. Glass bottle, handle with care.
Frequently asked questions
FAQYes, this serum is completely safe during pregnancy and breastfeeding. Hyaluronic acid is a naturally occurring substance in the body and does not penetrate into the bloodstream when applied topically. The formula contains no retinoids, salicylic acid, hydroquinone, or any other ingredients that are contraindicated during pregnancy.
Yes, this serum is confirmed fungal acne safe. It contains no fatty acids, oils, esters, polysorbates, or fermented ingredients that feed the malassezia yeast responsible for fungal acne. The minimal 9-ingredient formula is free from all known malassezia triggers.
Yes! Hyaluronic acid is one of the most compatible skincare ingredients and can be used with virtually any other active. Apply HA serum first on damp skin, let it absorb, then follow with your retinol, vitamin C, or acid treatments. The hydration can actually help buffer potential irritation from these actives.
This serum works excellently for all skin types. It's particularly ideal for oily, combination, sensitive, and acne-prone skin due to its lightweight, non-comedogenic formula. Those with very dry skin will benefit but should pair it with a rich moisturizer to seal in the hydration.
You'll notice immediate hydration and plumping after the first use. Within 1-2 weeks of consistent daily use, skin texture improves noticeably. By 3-4 weeks, you'll see sustained improvements in skin hydration, plumpness, and overall radiance. Fine dehydration lines typically diminish within the first month.
Apply after cleansing and toning, on damp skin. This should be one of your first serum steps, before any treatment serums (vitamin C, retinol, etc.). Always follow with a moisturizer to seal in the hydration. Use both morning and evening for best results.
No, this serum has a comedogenic rating of 0/5. It will not clog pores or cause breakouts. The water-based, oil-free formula is specifically designed to be non-comedogenic and is safe for acne-prone skin. No ingredient in the formula is known to cause congestion.
The serum has a 12-month Period After Opening (PAO). Once opened, use within one year for optimal efficacy. Store in a cool, dry place away from direct sunlight. The 30ml bottle typically lasts 2-3 months with twice-daily use; the 75ml bottle lasts 5-6 months.
Verdict: Good Molecules Hyaluronic Acid Serum delivers exceptional value at just $6 for a clean, effective hydrating serum. While competitors like The Ordinary offer higher HA concentrations and added actives, this serum wins on texture, simplicity, and safety profile. The non-sticky, fast-absorbing formula is perfect for layering, and the minimal ingredient list makes it ideal for sensitive, acne-prone, or fungal acne-affected skin. Best for: Those who prioritize clean formulas, sensitive skin types, and anyone wanting a reliable daily hydrator without breaking the bank.
Browse related
Product Overview
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.
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.
Quick Product Notes
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.
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
Notable Effects & Ingredients
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.
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!
Ingredients Related to Skin Types
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.
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.
Ingredient Safety Breakdown
Product ingredient list
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
| 1 |
Water
Solvent, Skin Conditioning
|
|
|
| 1 |
Propanediol
Solvent, Viscosity Controlling, Viscosity Decreasing Agent
|
|
|
| 2 |
Glycerin
Solvent, Perfuming, Fragrance, Humectant, Viscosity Decreasing Agent, Hair Conditioning, Skin Protecting, Denaturant, Skin Conditioning
|
Promotes Wound Healing
Hydrating
|
|
| 1 |
Sodium Hyaluronate
Skin Conditioning, Humectant
|
Promotes Wound Healing
Hydrating
|
|
| 0 |
Hydroxyacetophenone
|
Irritation
|








