No. 4 Collagen 73% Pudding Serum
No. 4 Collagen 73% Pudding Serum
Product Description
Product overview
A bouncy, pudding-textured anti-aging serum packed with 73% collagen extract, 8 types of hyaluronic acid, and powerful peptides to plump, firm, and deeply hydrate tired skin for a youthful, dewy complexion.
Triple Collagen Care
73% collagen extract combined with hydrolyzed collagen works to improve skin elasticity and firmness for a lifted, youthful appearance.
Texture & feel
SENSORYTriple Collagen Care
73% collagen extract combined with hydrolyzed collagen works to improve skin elasticity and firmness for a lifted, youthful appearance.
8-Layer Hyaluronic Complex
Eight different molecular weights of hyaluronic acid penetrate multiple skin layers for deep, long-lasting hydration.
Peptide Powerhouse
Contains Palmitoyl Tripeptide-5, Acetyl Hexapeptide-8 (Argireline), and Oligopeptide-3 to reduce fine lines and boost collagen synthesis.
Elastin & Niacinamide
Hydrolyzed elastin maintains skin bounce while niacinamide brightens and strengthens the skin barrier.
Safety & compatibility
SAFENo retinoids, salicylic acid, hydroquinone, or chemical sunscreens. Safe for use during pregnancy and nursing.
Contains Polyglyceryl-3 Methylglucose Distearate and Palmitoyl Tripeptide-5 which may feed malassezia. Patch test recommended.
Rated 1/5 on comedogenic scale. Lightweight formula unlikely to clog pores for most skin types.
Listed as "Fragrance" in ingredients. Those with fragrance sensitivity should patch test first.
Ingredient breakdown
INGREDIENTSCollagen Extract 73%Star Ingredient
The hero ingredient that gives this serum its signature bouncy texture. Provides intense hydration and helps plump skin, though topical collagen primarily works as a humectant rather than directly replacing lost collagen.
- Function: Hydrates and conditions skin surface
- Benefit: Creates plumping effect and improves skin texture
- Note: Collagen molecules are too large to penetrate deeply but excel at surface hydration
8 Types of Hyaluronic Acid Multi-weightProven
A comprehensive hyaluronic acid complex including Sodium Hyaluronate, Potassium Hyaluronate, Hydrolyzed Hyaluronic Acid, Sodium Acetylated Hyaluronate, and more for multi-layer hydration.
- Study: HA can hold up to 1000x its weight in water
- Multi-weight: Different molecular sizes target different skin layers
- Result: Both immediate and long-lasting hydration
Acetyl Hexapeptide-8 (Argireline) Active LevelPromising
Often called "Botox in a jar," this peptide helps relax facial muscle micro-movements to reduce the appearance of expression lines.
- Mechanism: Inhibits neurotransmitter release to relax muscles
- Studies: Shown to reduce wrinkle depth by up to 30% after 30 days
- Reality check: Not as powerful as Botox but provides noticeable smoothing
Palmitoyl Tripeptide-5 (Syn-Coll) Active LevelProven
A collagen-boosting tripeptide that signals skin to produce more collagen, improving firmness and elasticity.
- Study: 84-day study showed 7-12% wrinkle reduction at 1-2.5% concentration
- Result: 77% of participants reported improved firmness after 4 weeks
- Bonus: 60% noticed reduced pore appearance
Adenosine 0.04%+Proven
A naturally occurring compound that stimulates collagen production and helps smooth wrinkles while promoting skin healing.
- Function: Increases collagen synthesis and tissue repair
- Korean regulation: Approved as functional anti-wrinkle ingredient
- Added benefit: Also supports wound healing
Niacinamide (Vitamin B3) ~2%Proven
A multitasking vitamin that strengthens skin barrier, brightens complexion, and helps regulate oil production.
- Benefits: Barrier repair, brightness, pore refinement
- Studies: Shown to reduce hyperpigmentation and fine lines
- Compatibility: Works well with most other ingredients
44 ingredients
Collagen Extract (73%), Butylene Glycol, Water, 1,2-Hexanediol, Glycerin, Glycereth-26, Niacinamide, PEG-240/HDI Copolymer Bis-Decyltetradeceth-20 Ether, Caprylic/Capric Triglyceride, Methylpropanediol, Polyglyceryl-3 Methylglucose Distearate, Hydroxyethyl Urea, Cellulose Gum, Dicaprylyl Ether, Caprylyl Methicone, Glyceryl Polymethacrylate, Glyceryl Stearate, Rose Extract, Grapes (Wine) Extract, Sucrose, Adenosine, Disodium EDTA, Mineral Salts, Sodium Hyaluronate, Potassium Laurate, Tocopherol, Potassium Hyaluronate, Ethylhexylglycerin, Hydrolyzed Elastin, Hydrolyzed Keratin, Hydrolyzed Silk, Hyaluronic Acid, Hydrolyzed Hyaluronic Acid, Sodium Acetylated Hyaluronate, Hydroxypropyltrimonium Hyaluronate, Sodium Hyaluronate Crosspolymer, Dimethylsilanol Hyaluronate, Caprylyl Glycol, Hydrogenated Lecithin, Sodium Phosphate, Palmitoyl Tripeptide-5, Acetyl Hexapeptide-8, Oligopeptide-3, Fragrance
Where it fits in your routine
ROUTINEApply after toner/essence and before moisturizer. Can be layered for extra hydration. Use both morning and night.
How to use
HOW TO USEDispense Product
After cleansing and toning, pump 2-3 pumps of serum onto your fingertips or palm.
Apply Evenly
Gently spread the pudding-like serum across your face, avoiding the eye area.
Pat to Absorb
Use gentle patting motions with your fingertips to help the serum absorb. Layer if desired for extra hydration.
Follow with Moisturizer
Once absorbed (about 30 seconds), seal in with your favorite moisturizer. Apply sunscreen if using in the morning.
Who is it for?
WHOPerfect for you if:
- You want to address early signs of aging (fine lines, loss of firmness)
- Your skin feels dehydrated and needs a hydration boost
- You enjoy bouncy, pudding-like textures
- You want to prep skin for a plump, dewy makeup look
- You're looking for a gentle anti-aging serum safe for sensitive skin
- You're pregnant or breastfeeding and need safe skincare
Consider alternatives if:
- You have fungal acne (malassezia) - some ingredients may trigger flares
- You're extremely sensitive to fragrance
- You prefer completely fragrance-free products
- You need strong active treatments (retinol, vitamin C)
- You want a lightweight, watery serum texture
Skin type compatibility
SKIN TYPESDeeply hydrating formula with 8 types of hyaluronic acid provides intense moisture that dry skin craves.
Lightweight yet hydrating texture balances well across different face zones without overwhelming oily areas.
Absorbs relatively quickly but may feel slightly rich for very oily skin. Best used in smaller amounts.
Dermatologically tested and gentle formula. Contains fragrance, so patch test recommended for very reactive skin.
Ideal for aging concerns with collagen, peptides, elastin, and adenosine targeting wrinkles and loss of firmness.
Low comedogenic rating (1/5), but those with fungal acne should use caution due to certain emulsifiers.
Results timeline
WEEKS 8-12Immediate Hydration Boost
Skin feels noticeably more hydrated, plump, and bouncy. The dewy finish is visible right after application.
90% noticed improved hydrationImproved Skin Texture
Skin appears smoother and more radiant. Fine lines around eyes and forehead may look softer. Makeup applies more evenly.
77% noticed improved firmnessVisible Firming Effects
Peptides begin showing cumulative effects. Skin feels more elastic and resilient. Expression lines appear reduced.
60% noticed pore improvementOptimal Anti-Aging Results
Maximum benefits from collagen-boosting peptides. Significant improvement in overall skin elasticity and wrinkle depth.
85% would repurchaseRatings by platform
1K+ REVIEWSPros & cons
BALANCEDPraised
- Unique bouncy pudding texture that's satisfying to apply
- Impressive 73% collagen concentration
- Visible plumping and hydration from first use
- Contains proven anti-aging peptides
- Dermatologically tested for safety
- Works well under makeup as a primer
- Pregnancy and breastfeeding safe
- Good value for ingredient quality
Criticized
- Not fungal acne safe for some users
- Contains fragrance (though light)
- Can feel slightly sticky until fully absorbed
- Pump packaging makes it hard to get last product out
- May be too rich for very oily skin
- Topical collagen doesn't penetrate deeply
Budget-friendly alternatives (dupes)
DUPESContains 90% marine collagen with similar peptides and adenosine. Smaller 30ml bottle but more affordable per ml. Thinner, watery texture vs pudding consistency.
Focuses on peptides rather than collagen. Contains Matrixyl 3000 and Syn-Ake peptides. Fragrance-free, more watery texture. Different approach to anti-aging.
Six different peptides for firming. Larger 150ml bottle offers better value. Lighter texture, no collagen. Great for those wanting pure peptide benefits.
Different focus on soothing with centella. Still provides hydration and anti-aging benefits. Fragrance-free and fungal acne safe alternative.
Comparison with competitors
SIDE-BY-SIDENumbuzin No.4 Collagen Serum
Mizon Collagen 100
Storage & shelf life
12 MONTHS12 months after opening
Store in a cool, dry place away from direct sunlight. No refrigeration required.
Pump bottle with protective cap. Airless design helps preserve formula integrity.
Yes, 50ml is under the 100ml TSA limit for carry-on liquids.
Frequently asked questions
FAQYes, this serum is considered safe for use during pregnancy and breastfeeding. It does not contain retinoids, salicylic acid (BHA), hydroquinone, chemical sunscreens, or other ingredients typically advised to avoid during pregnancy. The formula is dermatologically tested and gentle. However, as with any skincare product, consult your healthcare provider if you have specific concerns.
Use with caution if you're prone to fungal acne. This serum contains Polyglyceryl-3 Methylglucose Distearate and Palmitoyl Tripeptide-5, which may feed malassezia yeast in some individuals. If you have a history of fungal acne, we recommend patch testing on a small area first or choosing a confirmed FA-safe alternative like The Ordinary Multi-Peptide Serum.
Yes, this serum is compatible with most active ingredients. For retinol: Apply the serum first, then retinol. For vitamin C: Use vitamin C in the morning and this serum at night, or layer with vitamin C after it absorbs. For AHA/BHA: Use on alternate days or apply acids first, wait 20 minutes, then apply this serum. The serum's hydrating properties can help buffer potential irritation from actives.
This serum works best for dry, combination, normal, and mature skin types. It's particularly excellent for those concerned with aging, dehydration, and loss of firmness. While suitable for oily skin, those with very oily complexions may find the texture slightly rich. Sensitive skin types can generally use it well, though a patch test is recommended due to the fragrance content.
You'll notice improved hydration and a plumping effect immediately after the first use. Smoother skin texture typically becomes visible within 2-4 weeks. For anti-aging benefits like reduced fine lines and improved firmness, allow 6-12 weeks of consistent use. Studies on the Syn-Coll peptide in this formula showed significant wrinkle reduction after 84 days of twice-daily use.
Apply after cleansing and toning, but before heavier serums, moisturizers, and sunscreen. The typical order is: Cleanser → Toner → Essence (if using) → This Serum → Other treatments → Moisturizer → Sunscreen (AM). Use 2-3 pumps morning and night. You can layer multiple applications for extra hydration.
This serum has a low comedogenic rating of approximately 1 out of 5, meaning it's unlikely to clog pores for most people. The lightweight, fast-absorbing formula is designed not to leave heavy residue. However, everyone's skin is different. If you're highly acne-prone, introduce the product gradually and monitor your skin's response.
The serum has a PAO (Period After Opening) of 12 months. Once opened, use within one year for optimal efficacy. Store in a cool, dry place away from direct sunlight. The pump packaging helps protect the formula from air exposure and contamination. A 50ml bottle typically lasts 2-3 months with twice-daily use of 2-3 pumps.
Verdict: Numbuzin No.4 Collagen 73% Pudding Serum delivers on its promise of intense hydration and visible plumping. The unique bouncy texture, impressive 73% collagen concentration, and multi-peptide complex make it a standout in the K-beauty anti-aging category. While not fungal acne safe and containing fragrance, it excels for dry, combination, and mature skin types seeking a dewy, youthful glow. At $22-28 for 50ml with dermatologist-tested safety and pregnancy-safe ingredients, it offers excellent value for those prioritizing hydration and gentle anti-aging benefits.
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 |
|---|---|---|---|
| 0 |
Collagen Extract
Skin Conditioning
|
Hydrating
|
|
| 1 |
Butylene Glycol
Solvent, Skin Conditioning, Masking, Fragrance, Humectant, Viscosity Controlling, Viscositydecreasing Agent
|
Hydrating
|
|
| 1 |
Water
Solvent, Skin Conditioning
|
|
|
| 1 |
1,2-Hexanediol
Solvent, Skin Conditioning
|
Hydrating
|
|
| 2 |
Glycerin
Solvent, Perfuming, Fragrance, Humectant, Viscosity Decreasing Agent, Hair Conditioning, Skin Protecting, Denaturant, Skin Conditioning
|
Promotes Wound Healing
Hydrating
|




