Vitamin C + Collagen Serum
Vitamin C + Collagen Serum
Product Description
Product overview
A lightweight brightening serum combining stable Vitamin C (Sodium Ascorbyl Phosphate), Niacinamide, and Phyto Collagen to visibly brighten skin, even out skin tone, and reduce signs of aging while keeping skin firm and hydrated.
Double Brightening Action
Vitamin C and Niacinamide work synergistically to brighten dull skin and fade dark spots for a naturally radiant complexion.
Texture & feel
SENSORYDouble Brightening Action
Vitamin C and Niacinamide work synergistically to brighten dull skin and fade dark spots for a naturally radiant complexion.
Collagen Booster
Phyto Collagen helps maintain skin elasticity and firmness, making skin feel bouncy and plump from first use.
Deep Hydration
Sodium Hyaluronate provides 1000x hydration power, locking in moisture for supple, healthy-looking skin.
Antioxidant Protection
Protects skin from UV rays, blue light, and environmental pollution that cause premature aging and dark spots.
Safety & compatibility
SAFEContains Sodium Ascorbyl Phosphate, a stable and gentle Vitamin C derivative that is safe for use during pregnancy and nursing.
Free from ferments, problematic fatty acids, and esters that feed Malassezia yeast. Safe for pityrosporum folliculitis-prone skin.
Rated 1/5 on comedogenic scale. Lightweight formula won't clog pores or cause breakouts on acne-prone skin.
Light fragrance added. Patch test recommended for those with fragrance sensitivities or highly reactive skin.
Ingredient breakdown
INGREDIENTSSodium Ascorbyl Phosphate 1%Proven
A stable, water-soluble Vitamin C derivative (Stay C®50) that converts to pure ascorbic acid in skin. Gentler than L-Ascorbic Acid with similar brightening and antioxidant benefits.
- Brightening: Inhibits melanin production to fade dark spots and even skin tone
- Anti-Acne: 1% SAP shows antimicrobial activity against P. acnes bacteria
- Collagen Boost: Stimulates collagen synthesis for firmer, plumper skin
- Photoprotection: Provides antioxidant defense against UV and blue light damage
Niacinamide 2%Proven
Vitamin B3 powerhouse that strengthens skin barrier, regulates sebum, and provides multiple anti-aging benefits without irritation.
- Barrier Support: Increases ceramide production for stronger skin barrier
- Anti-Inflammatory: Calms redness and soothes irritated skin
- Pore Refining: Regulates oil production and minimizes pore appearance
- Brightening: Inhibits melanosome transfer to reduce hyperpigmentation
Phyto CollagenPromising
Plant-derived collagen that helps maintain skin moisture, elasticity, and firmness. Works as a powerful humectant to keep skin plump and hydrated.
- Hydration: Locks moisture into skin for lasting hydration
- Elasticity: Supports skin structure for improved firmness
- Anti-Aging: Helps reduce appearance of fine lines and wrinkles
Sodium HyaluronateProven
Low molecular weight hyaluronic acid that penetrates deeper into skin layers, providing intense hydration and plumping effect.
- 1000x Hydration: Holds up to 1000 times its weight in water
- Deep Penetration: Smaller molecules reach deeper skin layers
- Plumping: Reduces appearance of fine lines by hydrating from within
Biosaccharide Gum-1 (Fucogel®)Promising
Seaweed-derived moisturizing agent with anti-aging and soothing properties. Provides long-lasting hydration without stickiness.
- Soothing: Calms and soothes stressed or irritated skin
- Anti-Aging: Improves skin smoothness and reduces wrinkle depth
- Moisturizing: Provides immediate and lasting hydration
23 ingredients
Aqua, Glycerin, Butylene Glycol, Niacinamide, Sodium Ascorbyl Phosphate, Betaine, Biosaccharide Gum-1, Ethoxydiglycol, Phenoxyethanol, Collagen, Carbomer, Allantoin, Xanthan Gum, Fragrance, Triethylene Glycol, Aminomethyl Propanol, Sodium Hyaluronate, Tetrasodium EDTA, Hydrogenated Lecithin, Glycine Soja Sterols, Sodium Polygamma-Glutamate, 2-Aminobutanol, Chlorphenesin
Where it fits in your routine
ROUTINEApply after toner on clean skin. Use morning and/or night. Always follow with SPF during daytime for best results.
How to use
HOW TO USECleanse & Tone
Start with freshly cleansed skin. Apply your toner and let it absorb for optimal serum penetration.
Dispense Serum
Using the dropper, dispense 2-3 drops of serum onto fingertips or directly onto face.
Apply & Pat
Gently spread serum evenly across face and neck. Pat gently until fully absorbed (about 30 seconds).
Follow Up
Apply moisturizer to seal in benefits. In the morning, always finish with sunscreen SPF 30+ for protection.
Who is it for?
WHOPerfect for you if:
- You have dull, uneven skin tone
- You want to prevent early signs of aging
- You're looking for an affordable Vitamin C serum
- You're new to Vitamin C and want a gentle formula
- You have sensitive or acne-prone skin
- You're pregnant or breastfeeding
- You have fungal acne concerns
- You want a lightweight, fast-absorbing serum
Consider alternatives if:
- You need high-potency Vitamin C (10%+) for stubborn pigmentation
- You're sensitive to fragrance in skincare
- You prefer completely fragrance-free products
- You want L-Ascorbic Acid specifically
- You need a larger bottle size for face and body
Skin type compatibility
SKIN TYPESLightweight gel texture absorbs quickly without adding shine. Niacinamide helps regulate sebum production.
Provides hydration with hyaluronic acid, but may need a richer moisturizer on top for very dry skin.
Balances perfectly across different face zones. Hydrates dry areas without making oily zones greasy.
Gentle SAP form of Vitamin C is well-tolerated. Contains fragrance, so patch test recommended for very reactive skin.
Non-comedogenic, fungal acne safe formula. SAP has antimicrobial properties that may help with acne.
Results timeline
MONTH 1-2Instant Hydration
Skin feels more hydrated, soft, and supple. Lightweight texture absorbs quickly leaving a dewy finish.
85% noticed immediate hydrationImproved Skin Texture
Skin starts to feel smoother and more refined. Early signs of brightening become visible. Complexion looks fresher.
70% noticed smoother skinVisible Brightening
Natural radiance returns as dullness fades. Skin tone appears more even. Dark spots start to lighten with consistent use.
75% noticed brighter skin in 14 daysFirmness & Glow
Collagen-boosting effects become noticeable. Skin feels firmer and more elastic. Overall complexion is healthier and more radiant.
65% noticed improved firmnessRatings by platform
81K+ REVIEWSPros & cons
BALANCEDPraised
- Extremely affordable price point
- Lightweight, fast-absorbing texture
- Gentle enough for sensitive skin
- Contains stable Vitamin C that won't oxidize quickly
- Pregnancy and fungal acne safe
- Visibly brightens skin with regular use
- Non-sticky, layers well under makeup
- Hydrating without being greasy
Criticized
- Small 20ml bottle size
- Contains fragrance
- Low Vitamin C concentration (1%)
- Results take 2-4 weeks to show
- May not be strong enough for stubborn dark spots
- Glass packaging can break if dropped
Budget-friendly alternatives (dupes)
DUPESHigher Vitamin C concentration (23% L-Ascorbic Acid) but grittier texture. More potent for pigmentation but may cause tingling. Not as gentle as SAP.
Contains 3-O-Ethyl Ascorbic Acid plus Niacinamide and Salicylic Acid. Larger 30ml size. Similar brightening claims but contains more active ingredients.
Japanese cult favorite with pure Ascorbic Acid and Vitamin E. Better for targeted spot treatment. Different texture (oil-like). More established efficacy data.
Comparison with competitors
SIDE-BY-SIDEStorage & shelf life
12 MONTHS12 months after opening
Store in a cool, dry place away from direct sunlight. Refrigeration optional but can extend freshness.
Glass dropper bottle that protects formula from oxidation and contamination
Yes, 20ml is under 100ml TSA limit. Handle with care due to glass packaging.
Frequently asked questions
FAQYes, this serum is safe for use during pregnancy and breastfeeding. It contains Sodium Ascorbyl Phosphate (SAP), a stable and gentle form of Vitamin C that is considered safe for pregnant and nursing mothers. The formula is free from retinoids, high-dose salicylic acid, hydroquinone, and other ingredients typically avoided during pregnancy.
Yes, this serum is fungal acne safe. It is free from ferments, problematic fatty acids (C12-C24), esters, polysorbates, and oils that feed Malassezia yeast. The formula relies on safe humectants like glycerin, sodium hyaluronate, and niacinamide that don't promote fungal growth.
Yes, SAP (Sodium Ascorbyl Phosphate) is a stable form of Vitamin C that can be used alongside most other actives. It works well with niacinamide (already in the formula), hyaluronic acid, and can be layered with retinol. For AHA/BHA, use them at different times of day to avoid irritation. Apply Vitamin C in the morning and retinol/acids at night for best results.
This serum is best suited for oily, combination, and acne-prone skin types due to its lightweight, non-greasy texture. It also works well for normal and dry skin when paired with a moisturizer. The gentle SAP formula makes it suitable for sensitive skin, though patch testing is recommended if you're highly reactive to fragrance.
You can expect to see initial hydration and smoother skin texture within the first week. Visible brightening typically appears within 2-4 weeks of consistent daily use. For more significant improvements in dark spots and skin tone, allow 4-8 weeks of regular application. Results vary based on individual skin conditions and concerns.
Apply this serum after cleansing and toning, before moisturizer. The order is: Cleanser → Toner → This Serum → Moisturizer → Sunscreen (AM only). For nighttime, you can follow with a richer cream or sleeping mask. The lightweight texture allows it to layer well under other products.
No, this serum has a low comedogenic rating of 1/5 and is considered non-comedogenic. It does not contain heavy oils, silicones, or pore-clogging ingredients. The lightweight gel texture is designed to absorb quickly without leaving residue that could block pores. It's suitable for acne-prone skin.
The serum has a PAO (Period After Opening) of 12 months. Once opened, use within one year for optimal efficacy. The stable SAP formula is less prone to oxidation than pure L-Ascorbic Acid, but store in a cool, dark place to maintain freshness. If the color changes to dark yellow/brown or develops an off smell, discontinue use.
Verdict: Hanasui Vitamin C + Collagen Serum is an excellent entry-level brightening serum that punches above its weight class. At under $5 for a multi-active formula featuring Vitamin C, Niacinamide, Collagen, and Hyaluronic Acid, it offers remarkable value for skincare beginners or those on a budget. The gentle SAP form of Vitamin C makes it pregnancy-safe and suitable for sensitive skin, while the fungal acne-safe formula is a bonus for those prone to Malassezia issues. While the low Vitamin C concentration (1%) may not satisfy users seeking aggressive brightening, its gentle approach delivers gradual, sustainable results without irritation. Ideal for preventive skincare and maintaining healthy, radiant skin rather than treating severe hyperpigmentation.
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
|
|
|
| 2 |
Glycerin
Solvent, Perfuming, Fragrance, Humectant, Viscosity Decreasing Agent, Hair Conditioning, Skin Protecting, Denaturant, Skin Conditioning
|
Promotes Wound Healing
Hydrating
|
|
| 1 |
Butylene Glycol
Solvent, Skin Conditioning, Masking, Fragrance, Humectant, Viscosity Controlling, Viscositydecreasing Agent
|
Hydrating
|
|
| 1 |
Niacinamide
Skin Conditioning, Hair Conditioning, Smoothing
|
Promotes Wound Healing
Redness
Irritation
Dark Spots
Pores
|
|
| 1 |
Sodium Ascorbyl Phosphate
Antioxidant
|
Redness
Texture
Pores
|





