A Vitamin C face serum is a potent skincare product that uses a highly concentrated form of Vitamin C (Ascorbic Acid), a powerful antioxidant, to protect the skin and improve its appearance. Its number one job is actually to fight off those nasty free radicals caused by sun exposure and pollution, which are the main culprits behind premature aging.
Okay, selecting the right Vitamin C serum is a huge, critical decision for any skincare business right now. Why? Because everyone wants radiant skin, the demand is booming, and the market for this powerhouse antioxidant is getting super competitive.
Here at Sogo Plaza, we offer a trusted selection of Vitamin C face serums made to fit real routines and real skin. In this guide, we will break down the precise meaning of OEM, detail the incredible benefits of these serums, and review our best-selling OEM VC face serum options available for your brand.
What is OEM Vitamin C Face Serum?
So, what exactly is an OEM Vitamin C Face Serum?
It's the ultimate way to bring your unique brand idea to life. When you work with us on an OEM (Original Equipment Manufacturer) basis, you're not just choosing something from a list - you're giving us your secret sauce.
You hand over your exact, perfected formula, whether it's a specific blend of L-Ascorbic Acid, Ferulic Acid, and Vitamin E, or whatever cutting-edge ingredients you've developed, plus your custom packaging. Our job is simple: to be your dedicated manufacturing partner, flawlessly creating that product at scale and making sure it passes every single global quality and safety check.
This deep level of customization is the whole point of OEM. You get a genuinely unique, high-efficacy Vitamin C serum that stands out because, unlike the ODM approach where you're rebranding a factory formula, you keep full ownership over the product's Intellectual Property (IP). It's truly yours.
Benefits of Using Vitamin C Face Serum
Look, if you're serious about healthy, anti-aging skincare, a good Vitamin C serum is simply non-negotiable - it's a must-have, best-seller for a reason! It’s backed by science and does a ton of heavy lifting for your skin:
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Your Daily Pollution Shield: Think of Vitamin C (especially stable forms like L-Ascorbic Acid) as a super-powered antioxidant barrier. It jumps in and neutralizes the nasty free radicals thrown at your skin by sun, smog, and daily life. This is the ultimate defense against getting those wrinkles and sunspots early!
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The Ultimate Glow-Up: Want brighter skin? C gets the job done. It actively works to slow down the production of melanin, meaning it effectively fades dark spots, sun damage, and those annoying red marks left behind by breakouts. Use it consistently, and you get that even, vibrant, lit-from-within look.
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It Firms Up Your Face: Vitamin C is essential for making collagen, the protein that keeps your skin bouncy, structured, and elastic. By boosting collagen production, the serum helps your skin feel firmer, smooth out fine lines, and generally look younger.
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A Little Repair Work: Since it fights all that daily stress (oxidative stress), Vitamin C actually helps your skin repair itself from past damage, like those years you spent forgetting to wear sunscreen.
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Bonus Hydration: High-quality serums often sneak in hydrating heroes like Hyaluronic Acid. This means you get all the powerful brightening and firming action without the risk of drying out or irritating your skin.
How to Apply Vitamin C Serum the Right Way?
To really get the most magic out of your amazing new OEM Vitamin C Face Serum, you need to understand how to apply your VC serum the right way! It’s all about layering correctly so those powerful active ingredients can soak right in. Here’s the step-by-step for the best results:
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Start Clean: First things first, wash your face! Use a gentle cleanser to remove any makeup, oil, or dirt. Think of it as clearing the path so your serum can get straight to work.
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A Quick Tone (If You Like): If a toner is part of your regular routine, go ahead and use it now. Just give it a minute or two to sink in completely before moving on.
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Pat, Don't Rub: Squirt about 3 to 5 drops of the serum right into the palm of your hand. Instead of rubbing aggressively (which can cause irritation), gently pat or press it all over your face, neck, and chest (your décolletage). Make sure you get even coverage!
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A Moment of Patience: This is key! Let the serum absorb for a full one to two minutes. If you rush the next step, you risk diluting the Vitamin C and making it less effective.
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Lock it Down: Follow up with your favorite moisturizer. This acts like a seal, locking in the serum's benefits and adding an extra layer of hydration.
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The Absolute Must (AM Only): Because Vitamin C is a superhero against sun damage, you have to pair it with the ultimate sidekick: sunscreen! Always finish your morning routine with a broad-spectrum SPF 30+. It's non-negotiable for sun protection.
Top 5 OEM Vitamin C Face Serums to Try in 2025
For brand owners seeking to develop and launch their own signature skincare product, these five exemplary OEM Vitamin C Face Serums from Sogo Plaza are here to save the day!
1. OEM Factory Brightening Vitamin C Original Liquid Solution 001
This formula is engineered to provide maximum free-radical defense, ideal for a premium anti-aging core product that demands clinical-grade results and stability. This serum provides potent antioxidant protection against daily environmental damage and actively stimulates profound collagen synthesis, noticeably reducing the depth of fine lines and restoring a youthful look.
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MOQ For Without Logo: 10 Bottles
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MOQ For Custom Logo: 200 Bottles
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Price Range: $1.99 - $2.49 USD (VAT included)
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Main Ingredients: 20% Vitamin C, Hyaluronic Acid, and Vitamin E
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Volume Quantity: 30ML
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Shelf Life & Origin: 3 Years, manufactured in China
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Certifications: FDA/MSDS
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Safety Features: No Alcohol, No Heavy Metals, No Color and No Artificial Scent
2. OEM/ODM Vitamin C Brightening Liquid 004
Targeted towards consumers with sensitive or dry skin who require powerful brightening, this serum uses a gentler Vitamin C derivative paired with intense hydrators for even skin tone correction. This formula focuses on reducing inflammation-related discoloration and minimizing the appearance of pores. It effectively corrects uneven skin tone and brightens the complexion while offering continuous hydration that leaves the skin feeling plump and soothed.
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MOQ For Without Logo: 10 Bottles
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MOQ For Custom Logo: 200 Bottles
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Price Range: $1.99 - $2.49 USD (VAT included)
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Main Ingredients: 20% Vitamin C, Hyaluronic Acid, and Vitamin E
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Volume Quantity: 30ML
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Shelf Life & Origin: 3 Years, manufactured in China
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Certifications: FDA/ MSDS
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Safety Features: No Color, No Artificial Scent and No Animal Test Used
3. OEM/ODM Anti-Oxidant Brightening Vitamin C Facial Serum 273
This solution is ideal for brands needing a high-volume, cost-effective, and fast-to-market option, offering a universally popular base formula with minor customization options. Utilizing the highly stable Ascorbyl Glucoside, this serum provides a prolonged release of the antioxidant, offering steady brightening and light collagen support with minimal risk of sensitization. It functions as an excellent daily foundational serum.
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MOQ For Stock Logo: 20 Bottles
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MOQ For Custom Logo: 1000 Bottles
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Price Range: $1.49 - $2.19 USD
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Main Ingredients: Ascorbic Acid Polypeptide and Niacinamide
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Volume Quantity: 15ML
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Shelf Life & Origin: 3 Years, manufactured in China
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Certifications: FDA/ MSDS
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Safety Features: No Color, No Artificial Scent and No Alcohol
4. OEM & ODM Private Label VC Hydrating Moisturizing Serum 308
Priced competitively for private labeling, this serum is centered around hydration and barrier repair, making the Vitamin C component an added benefit for deep moisturization-focused brands. The highly stable 3-O-Ethyl Ascorbic Acid provides powerful antioxidant benefits while the sophisticated Hyaluronic Acid complex delivers intense, multi-layer hydration. It significantly improves skin plumpness and enhances overall moisture retention and firmness.
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MOQ For Stock Logo: 20 Bottles
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MOQ For Custom Logo: 1000 Bottles
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Price Range: $3.49 - $3.99 USD
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Main Ingredients: 25% Vitamin C, 2.5% Retinol, 2% Salicylic Acid and 3.5% Niacinamide
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Volume Quantity: 30ML
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Shelf Life & Origin: 3 Years, manufactured in China
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Certifications: FDA/ MSDS
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Safety Features: Cruelty-free with No Artificial Color or Scent
5. OEM Factory Whitening Vitamin C Liquid Serum 003
This potent essence is specifically formulated for clients whose primary concern is stubborn hyperpigmentation, sun spots, and melasma, featuring a concentrated complex of melanin-inhibiting ingredients. Using the highly stable, oil-soluble THDA combined with Tranexamic Acid and Arbutin, this serum provides a synergistic effect that directly targets and inhibits melanin synthesis, resulting in accelerated fading of dark spots and a more uniform, flawless complexion.
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MOQ For Without Logo: 10 Bottles
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MOQ For Custom Logo: 200 Bottles
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Price Range: $1.99 - $2.49 USD
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Main Ingredients: 20% Vitamin C, Vitamin E and Hyaluronic Acid
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Volume Quantity: 30ML
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Shelf Life & Origin: 3 Years, manufactured in China
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Certifications: FDA/ MSDS
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Safety Features: No Artificial Color, No Scent, No Animal Test Used
When Should You Apply Vitamin C Serum in Your Skincare Routine?
Dermatologists are pretty much unanimous on this: the absolute best time to apply your Vitamin C Face Serum is in the morning (AM).
Think of it as setting up your skin's defense system for the day. The moment you step outside, your skin is hit by UV rays and pollution. Vitamin C’s main job is to act as a powerful antioxidant, swooping in to neutralize the free radicals that all those environmental attackers create.
When you layer your Vitamin C serum under a good sunscreen, the two become an unbeatable tag team:
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Sunscreen is the frontline - it blocks the majority of the UV light.
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Vitamin C is the backup defense - it catches and neutralizes any free radicals that sneak past the sunscreen’s barrier.
While you can use Vitamin C twice a day, the morning application is when you get the most protective payoff. If you do want to use it at night, just make sure you put it on your clean skin before you apply any of your heavier products or retinoids.
Common Mistakes That Ruin Your Vitamin C Serum
Even when you invest in a fantastic OEM Vitamin C serum, it won't work if you apply it wrong or treat it badly. Help your customers get the most out of their product by making sure they avoid these common slip-ups:
1. Where You Keep It Matters
Vitamin C is super effective, but it's also a drama queen - it hates air, light, and heat! (That’s why we use those dark, opaque bottles, by the way).
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The Big Mistake: Leaving your serum on a sunny windowsill or near a hot shower. It'll degrade fast.
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The Fix: Tell your customers to treat it like a sensitive plant! Store it in a cool, dark spot, like inside a drawer or a medicine cabinet.
2. Thinking C Replaces Your SPF
This is probably the biggest mistake! Vitamin C is an antioxidant shield, but it's not a physical block.
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The Big Mistake: Putting on your serum and thinking you're done. No UV blocker means sun damage still gets through.
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The Fix: You need both! Emphasize that Vitamin C is SPF's best friend, not its replacement. Sunscreen (SPF 30 or higher) must always be the absolute last step every single morning.
3. Using a Brownish, Dead Serum
When a Vitamin C serum turns dark yellow or brown, it's oxidized. It's not just ineffective - it can actually create new free radicals, which is the opposite of what you want!
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The Big Mistake: Trying to finish the bottle even though it looks like iced tea.
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The Fix: Teach consumers to look for color change. If it’s gone dark or the texture is weird, toss it, even if the printed expiration date hasn't hit yet. It's time for a fresh bottle.
4. Layering the Wrong Stuff
Certain power ingredients just don't play nice together with some forms of Vitamin C, especially L-Ascorbic Acid (LAA). They can destabilize or deactivate the C.
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The Big Mistake: Slathering on your Vitamin C serum immediately followed by something like Benzoyl Peroxide.
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The Fix: Keep it simple: stick to using Vitamin C in the morning (AM) and save those potentially conflicting ingredients (like Benzoyl Peroxide) for your nighttime (PM) routine.
Why Choose Your OEM Vitamin C Face Serum from Sogo Plaza?
You can trust Sogo Plaza to be the powerful OEM partner you need to bring your vision to life. Since 2019, we’ve built our reputation on quality, starting with our massive 10,000 square meter factory in Guangzhou, China. We're not just a facility; we're a team of over 200 dedicated professionals, including a serious R&D team with 20+ expert engineers, all focused on perfecting your formula.
We make sure your product is flawless by adhering to the highest global standards. Our factory proudly holds certifications like GMPC, ISO22716, MSDS, FDA, and CPNP, and we use sophisticated gear like Electric Thermostatic Incubators to strictly control quality. This means your custom Vitamin C serum isn't just made; it's crafted safely and efficiently.
With 10 dedicated production lines pumping out up to 3,000,000 pieces monthly, we have the scale to handle your success. Plus, we make it easy: we take orders 24/7, process them lightning-fast (within 48 hours), and offer full flexibility on ingredient customization. We’re here to ensure your premium OEM Vitamin C Face Serum gets to market smoothly and swiftly.
Wrapping Up
Look, the demand for Vitamin C serums is only going to skyrocket from here, making it a seriously smart product to launch in 2025. The key is skipping the guesswork. By sticking with the OEM model and teaming up with a reliable partner like us, you get total control over your design while accessing clinical-grade formulations.
It all boils down to the details: insisting on stable ingredients, demanding strict safety (like zero heavy metals or alcohol), and thinking smart about your MOQ. Do that, and you're perfectly set up to launch a serum that's not just high-quality and profitable, but genuinely stands out on the shelf. Ready to win? Choose quality, choose customization, choose Sogo Plaza to power your success.
Quick FAQs on Vitamin C Face Serums
Here are three quick answers to the questions we hear most often:
Question: What's the best time of day to use it?
Answer: Definitely the morning! Since Vitamin C is an antioxidant, putting it on before you head out helps fight the free radicals caused by sunlight and pollution all day long. Just remember to layer it under your sunscreen!
Question: My serum turned yellow/brown - is it still okay?
Answer: Nope! That color change means your Vitamin C has oxidized (gone bad). It’s lost its power and might actually do more harm than good, so it’s time to toss it out and grab a fresh bottle.
Question: Can I use it with my Retinol?
Answer: It’s better to separate them! We suggest using your Vitamin C serum in the morning and saving powerful ingredients like Retinol for your nighttime routine. This ensures both ingredients work at their peak effectiveness without interfering with each other.