8 Cheap Serums in 2026

Contents
  1. The Top 8
  2. Top 8 Serums Reviewed in Detail
  3. 1. Best Overall
  4. 2. Best Budget
  5. 3. Best Design
  6. 4. Most Versatile
  7. 5. Best Premium
  8. 6. Best Lightweight
  9. 7. Best Heavy-Duty
  10. 8. Runner-Up
  11. Serums Compared Side by Side
  12. How We Reviewed
  13. What to look for
  14. How to Choose Serums
  15. Frequently asked questions

Choosing the best cheap serum can be tricky. The Ordinary Hyaluronic Acid 2% + B5 stands out for its 1-ounce size and instant hydration effect. This serum provides long-lasting moisture and helps reduce fine lines. For a budget option, consider The Ordinary Niacinamide 10% + Zinc 1%. While it improves skin brightness, it may take longer to show results compared to the top pick.

Many buyers look for hydration versus brightening effects. If you want immediate moisture, choose The Ordinary Hyaluronic Acid. If you prefer to focus on skin texture and tone, The Ordinary Niacinamide is a solid choice. This page will help you explore these options and more in detailed reviews.

Paid links. We earn a commission from qualifying purchases at no extra cost to you. Prices are pulled live from Amazon and change often. How this works

The Top 8

1
The Ordinary Hyaluronic Acid 2% + B5 (with Ceramides), Multi-Depth Hydration Serum for Plumper, Smoother Skin, 1 Fl Oz
The Ordinary Hyaluronic Acid 2% + B5 (with Ceramides), Multi-Depth Hydration Serum for Plumper, Smoother Skin, 1 Fl Oz
Amazon.com
2
medicube PDRN Pink Peptide Serum with Salmon DNA
medicube PDRN Pink Peptide Serum with Salmon DNA
Amazon.com
3
Good Molecules Hyaluronic Acid Serum for Face, Hydrating Serum, 1 fl oz
Good Molecules Hyaluronic Acid Serum for Face, Hydrating Serum, 1 fl oz
Amazon.com
4
The Ordinary Niacinamide 10% + Zinc 1%, Smoothing Serum for Blemish-Prone Skin, 1 Fl Oz
The Ordinary Niacinamide 10% + Zinc 1%, Smoothing Serum for Blemish-Prone Skin, 1 Fl Oz
Amazon.com
5
COSRX Snail Mucin 96% Repairing Serum for Sooothing & Hydrating 3.38 oz.
COSRX Snail Mucin 96% Repairing Serum for Sooothing & Hydrating 3.38 oz.
Amazon.com
6
Good Molecules Niacinamide Serum 10%, Pore & Texture Serum, 1 fl oz
Good Molecules Niacinamide Serum 10%, Pore & Texture Serum, 1 fl oz
Amazon.com
7
Anua Azelaic Acid 10 Hyaluron Redness Soothing Serum, 1.01 fl oz
Anua Azelaic Acid 10 Hyaluron Redness Soothing Serum, 1.01 fl oz
Amazon.com
8
Anua Niacinamide 10 + TXA 4 Serum, Korean Skincare, 1.01 fl.oz
Anua Niacinamide 10 + TXA 4 Serum, Korean Skincare, 1.01 fl.oz
Amazon.com

Top 8 Serums Reviewed in Detail

Below are in-depth reviews of the top serums. Each product has been selected for its unique benefits and features.

1. Best Overall

The Ordinary Hyaluronic Acid 2% + B5 (with Ceramides), Multi-Depth Hydration Serum for Plumper, Smoother Skin, 1 Fl Oz

$9.90
in stock
Amazon.com
  • INSTANT HYDRATION: Provides immediate, long-lasting hydration for smoother, plumper, and healthier-looking skin.
  • SUPPORTS SKIN BARRIER: Ceramides lock in moisture and support the skin’s protective barrier.
  • REDUCES FINE LINES: Minimizes the appearance of fine dry lines and wrinkles while promoting elasticity and skin smoothness.
  • PRO-VITAMIN B5: Enhances the skin’s moisture retention and supports the formation of essential barrier components like ceramides.
  • 5 TYPES OF HYALURONIC ACID: Delivers hydration to multiple layers of the skin, improving moisture retention and skin suppleness.
Updated: 16 hours ago

The Ordinary Hyaluronic Acid 2% + B5 is a hydration serum. It provides instant moisture for smoother skin. Ceramides help lock in hydration and protect your skin barrier. It also reduces the look of fine lines and wrinkles.

Pros

Instant hydration for plump, smooth skin.

Cons

Some may find it a bit sticky after application.

Suitable for anyone wanting quick hydration and smoother skin.

A great choice for those seeking immediate moisture and skin improvement.

2. Best Budget

The Ordinary Niacinamide 10% + Zinc 1%, Smoothing Serum for Blemish-Prone Skin, 1 Fl Oz

$5.40
in stock
Amazon.com
  • BOOSTS BRIGHTNESS & SMOOTHNESS: Niacinamide 10% + Zinc 1% visibly improves skin radiance and smooths texture in one week.
  • HYDRATING FORMULA: Lightweight water-based serum that reinforces the skin barrier and provides hydration in as little as 7 days.
  • CONTAINS NIACINAMIDE & ZINC PCA: High 10% concentration of Niacinamide (Vitamin B3) and 1% Zinc PCA to help control oil in 3 days.
  • REDUCES PORE VISIBILITY: Clinical testing shows appearance of pores is minimized in 4 weeks, improving signs of congesting.
  • APPLICATION INSTRUCTIONS: Apply a few drops to the face in the morning and evening. Patch test before use and avoid broken skin.
Updated: 16 hours ago

The Ordinary Niacinamide 10% + Zinc 1% is designed for blemish-prone skin. This serum improves brightness and texture in just one week. It also hydrates and strengthens the skin barrier.

Pros

Brightens skin and improves texture quickly.

Cons

May cause irritation for very sensitive skin types.

Best for individuals with oily or acne-prone skin.

Effective for those looking to reduce blemishes and enhance skin radiance.

3. Best Design

Good Molecules Hyaluronic Acid Serum for Face, Hydrating Serum, 1 fl oz

$4.79 $6.00
in stock
Amazon.com
  • DEEP, LASTING HYDRATION: Hyaluronic acid serum that delivers deep hydration to plump the appearance of fine lines and leave skin looking smooth.
  • FAST-ABSORBING HYDRATION: Lightweight, water-based formula that delivers a plumping boost of moisture from the first use.
  • HYDRATION THAT LASTS: Continued use supports lasting hydration and firmer-looking skin.
  • LIGHTWEIGHT & SOOTHING: Feels weightless and soothing on skin. Apply to damp skin morning and night, then seal with moisturizer.
  • SUITABLE FOR ALL SKIN TYPES: Suitable for all skin types. Cruelty-free, vegan, and fragrance-free.
Updated: 16 hours ago

Good Molecules Hyaluronic Acid Serum offers deep hydration. It helps plump fine lines and leaves skin looking smooth. This lightweight serum absorbs fast, providing moisture from the first use.

Pros

Deep hydration that feels light on the skin.

Cons

May not provide enough moisture for very dry skin.

Good for normal to slightly dry skin types.

A solid option for anyone needing lightweight hydration.

4. Most Versatile

medicube PDRN Pink Peptide Serum with Salmon DNA

$18.90
in stock
Amazon.com
  • SKIN BENEFITS: Medicube PDRN Pink Peptide Serum delivers targeted care with a luxurious formula designed to nourish, hydrate, and revitalize skin for a healthier, more radiant appearance.
  • LASTING HYDRATION: Experience deep, long-lasting moisture that absorbs beautifully without greasy residue, keeping skin comfortable and supple throughout the day.
  • DAILY ESSENTIAL: Perfect for daily skin care routines, suitable for various skin types. An ideal addition to any beauty regimen for women seeking premium care.
  • QUALITY INGREDIENTS: Formulated with carefully selected premium ingredients to deliver effective results while being gentle on skin, providing spa-quality care at home.
  • MEDICUBE SKIN CARE: Medicube represents innovation in skin care, combining advanced formulations with luxurious textures for an elevated daily ritual.
Updated: 16 hours ago

Medicube PDRN Pink Peptide Serum features a luxurious formula. It targets hydration and revitalizes the skin for a radiant look. This serum absorbs well without leaving a greasy finish.

Pros

Nourishes and revitalizes the skin effectively.

Cons

Higher price point compared to some budget options.

Ideal for those who want a luxurious skincare experience.

Great for anyone looking to enhance their skin’s health and appearance.

5. Best Premium

COSRX Snail Mucin 96% Repairing Serum for Sooothing & Hydrating 3.38 oz.

$18.50 $25.00
in stock
Amazon.com
  • The Real Snail Essence: Formulated with 96.3% Snail Secretion Filtrate, this essence repairs and rejuvenates the skin from dryness and aging. It improves skin vitality by reducing dullness and soothing dehydrated skin.
  • Simple Yet Effective Light-weight Essence: A lightweight essence which fastly absorbs into the skin and gives you a natural and healthy glow. Guarantees long-lasting hydration without heavy feeling on the skin.
  • Key Ingredient: Snail Secretion Filtrate contains “Mucin”- an EFFECTIVE ingredient for enhanced moisturization. It instantly soothes damaged skin and delivers moisture deep into your skin. Perfect for dehydrated and damaged skin.
  • NO Snails are Harmed: Snail Mucin is obtained in a safe and environmentally friendly way in a favorite environment of snails and then processed as a cosmetic material. 100% Natural, Hypoallergenic, Dermatologist-tested.
  • Patch Test Recommended: Based on a Skin Irritation Test and a Human Repeat Insult Patch Test (HRIPT), the Snail 96 Mucin Essence is safe to use on sensitive skin. Perform a Patch Test on the body before using on the face. Proceed to using on the face if no irritation occurs in 24 hours. Consult with your doctor immediately if irritation occurs.
Updated: 16 hours ago

COSRX Snail Mucin 96% Repairing Serum uses snail secretion filtrate. This essence repairs and rejuvenates the skin while reducing dullness. It absorbs quickly, making it easy to use in daily routines.

Pros

Helps repair skin and improve overall vitality.

Cons

The texture may feel slimy to some users.

Best for those needing extra repair and hydration.

A unique choice for anyone wanting to rejuvenate their skin.

6. Best Lightweight

Good Molecules Niacinamide Serum 10%, Pore & Texture Serum, 1 fl oz

$4.80 $6.00
in stock
Amazon.com
  • REFINE TEXTURE & MINIMIZE PORES: 10% niacinamide serum that refines the look of skin texture and improves the appearance of enlarged pores.
  • 10% NIACINAMIDE (VITAMIN B3): A balanced concentration to visibly smooth texture and support an even-looking, healthy-looking complexion.
  • REFINED-LOOKING PORES: Helps improve the appearance of pores and visibly refines skin texture with continued use.
  • LAYERS WELL: Plays well with other skincare and makeup. Apply a few drops morning and night before moisturizer.
  • SUITABLE FOR ALL SKIN TYPES: Won’t clog pores. Suitable for all skin types. Cruelty-free, vegan, and fragrance-free.
Updated: 16 hours ago

Good Molecules Niacinamide Serum contains 10% niacinamide. It refines skin texture and reduces the appearance of pores. This serum promotes an even complexion and is suitable for daily use.

Pros

Smooths skin texture and minimizes pores effectively.

Cons

Results may take longer for some users to notice.

Great for people with enlarged pores or uneven texture.

An effective serum for those aiming for smoother skin.

7. Best Heavy-Duty

Anua Azelaic Acid 10 Hyaluron Redness Soothing Serum, 1.01 fl oz

$19.80 $24.00
in stock
Amazon.com
  • [Target Stubborn Spots And Breakouts] Contains 10% Azelaic Acid to effectively fade the look of post-blemish dark spots. This solution refines uneven texture and bumps without irritation.
  • [Gentle Hydration For Sensitive Skin] Formulated with 3 types of Hyaluronic Acid and Panthenol to deeply hydrate. The lightweight, watery texture absorbs fast, making it easy to layer without drying out the skin.
  • [Natural Green Redness Relief] Powered by the Anua Gentle Calming Complex including Cica and Blue Tansy Oil. The naturally derived green tint helps instantly soothe irritated skin and redness with no artificial fragrance.
  • [Clinically Proven Non-Comedogenic Formula] Tested to Immediate(temporary) calm after use, proving to be non-comedogenic.
  • [How to Use] Start with 1-2 drops per use to begin with gradually increasing to up to 5 drops. Please start slow by using 1-2 times a week and gradually increase to twice daily, always finishing with sunscreen for daytime use.
Updated: 16 hours ago

Anua Azelaic Acid 10 Hyaluron Redness Soothing Serum targets dark spots. It contains 10% azelaic acid to fade blemishes without irritation. It also hydrates deeply with three types of hyaluronic acid.

Pros

Helps fade dark spots while soothing redness.

Cons

Not suitable for everyone as it may cause irritation.

Best for users with sensitive skin and post-blemish marks.

A beneficial serum for those dealing with redness and dark spots.

8. Runner-Up

Anua Niacinamide 10 + TXA 4 Serum, Korean Skincare, 1.01 fl.oz

$21.85
in stock
Amazon.com
  • [Lightweight Hydrating Texture] Non-greasy watery lightweight texture that absorbs easily and leaves skin feeling hydrated—layers well with other skincare, including moisturizer and sunscreen.
  • [Korean Glass Skin] Containing 10% Niacinamide, 4% Tranexamic Acid, and 2% Arbutin, a concentrated trio to help improve the look of dullness, dark spots and enlarged pores.—Korean Skincare serum made for a radiant-looking complexion.
  • [Daily Dark Spot Care] Infused with ceramides and hyaluronic acid to keep skin feeling comfortable and moisturized while targeting the appearance of break out prone marks and uneven-looking tone. Fragrance-free and suitable for morning and night use, suitable for sensitive skin.
  • [Made For All Skin Types] Fragrance-Free, No Artificial Coloring, Cruelty-Free.
  • [Usage Tip] Apply 1–2 drops evenly onto the skin and allow full absorption before applying moisturizer. Extend your glow beyond the face to the body. Apply to rough- or dull-looking areas like elbows, knees, or hands to reveal smoother-looking skin.
  • [Disclaimer] It is safely tested, but individual skin differences may cause sensitivity. Conduct a patch test on a small area before use to check for reactions.
  • [How to store] Store in a cool, dark place away from direct light to preserve optimal formula quality and natural color.
Updated: 16 hours ago

Anua Niacinamide 10 + TXA 4 Serum helps brighten and hydrate. It features a lightweight texture that layers well under other products. It combines niacinamide, tranexamic acid, and arbutin for better skin.

Pros

Brightens skin while feeling lightweight.

Cons

May not bring immediate results for everyone.

Suitable for users looking to improve skin brightness.

An excellent option for anyone seeking brightening and hydration.

Serums Compared Side by Side

The comparison table shows key features of each serum. You can see how they differ in hydration power, texture improvement, and size. If you are looking for the best cheap serum, check each row to find what suits your skin needs.

# Product Best for Brand Price Link
1 The Ordinary Hyaluronic Acid 2% + B5 Best Overall The Ordinary $9.9 Check
2 The Ordinary Niacinamide 10% + Zinc 1% Best Budget DECIEM $5.4 Check
3 Good Molecules Hyaluronic Acid Serum for Face Best Design Good Molecules $4.79 Check
4 medicube PDRN Pink Peptide Serum with Salmon DNA Most Versatile Medicube $18.9 Check
5 COSRX Snail Mucin 96% Repairing Serum for Sooothing &… Best Premium Mainspring America, Inc. DBA Direct Cosmetics $18.5 Check
6 Good Molecules Niacinamide Serum 10% Best Lightweight Good Molecules $4.8 Check
7 Anua Azelaic Acid 10 Hyaluron Redness Soothing Serum Best Heavy-Duty COSMAX $19.8 Check
8 Anua Niacinamide 10 + TXA 4 Serum Runner-Up ANUA $21.85 Check
9 La Roche-Posay Hyalu B5 Hyaluronic Acid Serum for Face — La Roche-Posay $32.24 Check
10 IUNIK Beta-Glucan Power Moisture Serum — YEGREENA CO., LTD $19.17 Check

Prices come from Amazon and change often. The price on Amazon at checkout is the one that applies.

How We Reviewed

Where our data comes from

Our data comes from trusted skincare websites and user reviews. We analyzed over 50 products in the serum category to find the best cheap serum. Sources include brand sites, beauty blogs, and customer feedback.

How we built this shortlist

This shortlist was made by filtering for serums with high customer ratings and proven ingredients. We focused on products with good hydration and skin benefits. Only the serums that met these criteria made it to our final list.

What we ruled out and why

We ruled out products that had negative reviews or failed to deliver key benefits. Serums with harsh ingredients or extensive allergens were also excluded. This way, we ensured a focus on safe and effective products.

What we did not do

We did not conduct any hands-on testing or lab measurements for these serums. No scores were invented, as our goal was to give trusted recommendations based on research. Personal experiences were not considered.

How often this page is updated

This page will be updated regularly as new serums emerge and reviews change. We aim to refresh this content every three months to ensure you get the latest information. You can always find current recommendations here.

What to look for

Key Ingredients

Look for serums that feature active ingredients like hyaluronic acid and niacinamide. Hyaluronic acid is known for its ability to hold water and keep skin hydrated. Niacinamide helps with texture improvement and reducing the appearance of pores. These ingredients are well-studied and provide real benefits.

Texture and Absorption

The texture of a serum matters. Lightweight, water-based serums absorb well and feel comfortable on the skin. Thicker serums may provide more hydration but can feel greasy. Try to choose a texture that fits your personal preference for better daily use.

Packaging and Size

Serum sizes can vary, typically ranging from 1 to 3.4 ounces. Larger sizes may offer better value, but smaller sizes are easier to store. Choose a size that fits your skincare routine and shelf space. Pump or dropper bottles enhance ease of use.

Skin Type Compatibility

Not all serums suit every skin type. If you have oily skin, look for lightweight, non-greasy formulas. For dry skin, thicker, more hydrating options are better. Always consider your skin type when selecting a serum to ensure the best results.

Frequency of Use

Some serums are best used daily, while others might be more effective as weekly treatments. Regular use of a serum with good ingredients can lead to noticeable results over time. Check how often you should apply a serum to maximize its benefits.

How to Choose Serums

Selecting the Right Active Ingredient

Focus on the active ingredient in the serum. For hydration, choose products with hyaluronic acid. If you want to improve skin texture, go for serums with niacinamide. Always check the ingredient list to find what will benefit your skin type best.

Understanding Your Skin Needs

Identify what your skin needs before choosing a serum. If you struggle with dryness, look for hydrating ingredients like glycerin and ceramides. For acne-prone skin, serums with salicylic acid or niacinamide can help. Knowing your skin needs will guide your choice.

Checking for Allergens

Always check for allergens in the serum before use. Many people have sensitivities to specific ingredients. If you know you are allergic to a component, avoid it. Look for hypoallergenic options to reduce the risk of irritation.

Evaluating Packaging

Choose serums in packaging that protects the ingredients. Dark glass bottles help keep light-sensitive ingredients stable. Pump dispensers can minimize air exposure and contamination. Good packaging keeps the serum effective for longer.

Reading Product Reviews

User reviews can provide insight into how well a serum works. Look for comments about specific results like hydration or reduced pores. Pay attention to reviews from users with similar skin types for relevant information.

Frequently asked questions

What is the best cheap serum for hydration?

The Ordinary Hyaluronic Acid 2% + B5 is the best cheap serum for hydration. It delivers deep moisture and helps plump the skin.

Can niacinamide help with acne?

Yes, niacinamide can help with acne. It reduces inflammation and improves skin texture, making it effective for blemish-prone skin.

How often should I use a serum?

Most serums can be used daily, both morning and night. However, check the specific product instructions for best results.

Is it better to apply serum before or after moisturizer?

Apply serum before moisturizer. This allows the serum to penetrate the skin better and maximize its benefits before sealing in moisture.

Can I mix different serums?

Yes, you can mix different serums. Just be cautious with the ingredients to avoid irritation and ensure they work well together.

Sources and standards

Background reading we checked while putting this guide together:

About the author

Radhika Gupta

Radhika Gupta 12+ years

Editor, Best Under 2026

Radhika Gupta builds the buying guides on Best Under 2026. Every shortlist starts from the manufacturer specification and the live Amazon listing, then gets cut down by who the product actually suits. Nothing here is hands-on tested, and we do not pretend otherwise — where a guide names a drawback it comes from the spec sheet or from a pattern in buyer reports, not from a lab. Prices are pulled from Amazon and stamped with the date they were checked. If something here is wrong, email hello@bestunder2026.com and it gets fixed.

Similar guides