18% Vitamin C Serum for Brighter, More Even-Looking Skin.

At Trendy Blends, we made our 18% vitamin C serum for one job: helping your skin look brighter, more even and more radiant, every single morning. Our formula pairs 18% 3-O-ethyl ascorbic acid, a stable form of vitamin C, with niacinamide and hyaluronic acid. Together, they help visibly brighten dullness, fade the look of dark spots and keep skin feeling hydrated.

Our serum is lightweight, fragrance-free and cruelty-free. It comes in an airless pump bottle designed to limit air exposure, so the formula stays fresh from the first use to the last. You can buy it directly from us or on Amazon.

Why Your Skin Will Love Our Vitamin C Serum.

18% vitamin C: A high-strength, stable form of vitamin C that helps visibly brighten and even out skin tone.
Niacinamide + hyaluronic acid: Helps improve the look of uneven tone while keeping skin comfortably hydrated.
Airless pump: Helps keep air out of the bottle, which helps protect the formula between uses.
Lightweight feel: Absorbs quickly and layers easily under moisturizer and sunscreen.
Fragrance-free and cruelty-free: No added fragrance, parabens, sulfates or dyes, and never tested on animals.

An Airless Pump Vitamin C Serum Made to Stay Fresh.

Vitamin C is famously sensitive to air and light. Classic L-ascorbic acid can oxidize quickly, turning a serum yellow or brown. That’s one reason we chose 3-O-ethyl ascorbic acid: it’s a vitamin C derivative known for being much more stable. Then we added a second layer of protection with the packaging.

Less Air Exposure, Bottle After Bottle.

A dropper bottle lets in fresh air every time you unscrew the cap. Our airless pump has no dip tube. Instead, a piston at the bottom rises as you pump, so outside air doesn’t flow back into the bottle. Less air exposure helps the serum stay fresh through the whole bottle.

Cleaner, Low-Waste Dispensing.

With no dropper touching your skin and no fingers dipping into the bottle, the formula inside stays better protected. The rising piston also pushes serum up to the nozzle, so very little product gets left behind.

A Consistent Amount With Every Pump.

Each pump dispenses about the same amount of serum. That makes it easy to use the right amount every day, with no guessing and no overdoing it.

What’s Inside Our 18% Vitamin C Serum.

We kept the formula focused on ingredients that work well together: a brightening vitamin C, a supporting vitamin B3, proven hydrators and soothing botanicals.

18% 3-O-Ethyl Ascorbic Acid.

This is our vitamin C. It’s an antioxidant that helps defend skin against everyday environmental stressors and helps visibly brighten a dull, uneven complexion. Unlike L-ascorbic acid, this form is known for its stability, which is why it suits a daily serum you’ll use over many weeks.

Niacinamide (Vitamin B3).

Niacinamide helps improve the look of uneven skin tone, enlarged pores and dullness. It also supports the skin’s moisture barrier. That’s why our vitamin C serum with niacinamide is such a natural fit for anyone focused on dark spots and tone.

Hyaluronic Acid and Glycerin.

Hyaluronic acid (listed as sodium hyaluronate) and glycerin are humectants. They’re hydrators, not antioxidants. They draw water into the skin’s surface, helping it look plumper and smoother and keeping the serum from feeling drying.

Aloe and Cucumber.

Aloe leaf juice and cucumber fruit extract give the formula a soothing, comforting feel, a thoughtful balance for a high-strength vitamin C serum.

Full Ingredient List.

Deionized Water, Propanediol, Niacinamide, Glycerin, 3-O-Ethyl Ascorbic Acid (18% Vitamin C), Vaccinium Myrtillus (Bilberry) Fruit Extract, Saccharum Officinarum (Sugar Cane) Extract, Acer Saccharum (Sugar Maple) Extract, Citrus Aurantium Dulcis (Orange) Fruit Extract, Citrus Limon (Lemon) Fruit Extract, Cucumis Sativus (Cucumber) Fruit Extract, Sodium Hyaluronate, Aloe Barbadensis Leaf Juice, Caprylhydroxamic Acid, 1,2-Hexanediol, Hydroxyethylcellulose, Sodium Gluconate.

Free from: parabens, sulfates, added fragrance, dyes and mineral oil. Cruelty-free.

Want a second look? Our full ingredient list is also available on independent ingredient databases; SkinSignal, Incidecoder, Skincarisma , Skin Safe Products, SkinSort

How to Use Our Vitamin C Serum.

Cleanse. Start with a freshly cleansed face. Pat dry, leaving skin slightly damp.
Apply. Dispense 2 pumps of serum and gently press it into your face and neck, focusing on areas with uneven tone. Let it absorb for about 30-60 seconds.
Moisturize and protect. Follow with your moisturizer. In the morning, always finish with a broad-spectrum SPF 30 or higher. Daily sunscreen is essential to help prevent new dark spots.

Tips:

New to vitamin C or have sensitive skin? Start every other day and build up to daily use as your skin adjusts.
Patch test first. Try a small amount on your inner arm for 24 hours before applying to your face.
Storage: Keep the bottle in a cool, dark place, away from direct sunlight.

7 Reasons to Choose Our 18% Vitamin C Serum.

1. A Stable Form of Vitamin C at 18%.

Many vitamin C serums rely on L-ascorbic acid, which is effective but notoriously unstable. It also needs a very low (acidic) pH to work, which some people find stinging. We chose 18% 3-O-ethyl ascorbic acid, a stable vitamin C derivative, so you can use the whole bottle without racing the clock.

2. Vitamin C Serum With Niacinamide, in One Step.

Vitamin C and niacinamide used to be called a bad pairing. That idea has largely been retired. Vitamin C helps visibly brighten while niacinamide helps even out the look of skin tone. That makes our formula a smart vitamin C serum for dark spots, post-blemish marks and dullness.

3. Hydration Built In.

High-strength vitamin C serums can leave skin feeling tight. Ours includes hyaluronic acid and glycerin to keep skin feeling hydrated, smooth and comfortable, never sticky.

4. Considerate of Sensitive Skin.

We designed our serum for all skin types. It’s fragrance-free, and it includes soothing aloe and cucumber. If your skin is reactive, read our guide to vitamin C serum for sensitive skin, patch test first and start every other day.

5. Packaging That Protects the Formula.

A stable vitamin C plus an airless pump vitamin C serum bottle means less air exposure, less contamination and less waste, so the last pump feels like the first.

6. Fragrance-Free and Cruelty-Free.

Our fragrance-free vitamin C serum skips added fragrance, parabens, sulfates and dyes, and it’s never tested on animals. It’s a simple, focused formula you can feel good about using every day.

7. Glow More, Pay Less.

That’s our motto. Skip the luxury markups, celebrity endorsements and heavy glass packaging. We put our effort into the formula and keep it accessible, and you can buy it directly from us or on Amazon.

Your Morning Vitamin C Routine: Thin to Thick.

Layer your skincare from the thinnest texture to the thickest, so each product can do its job.

Cleanse with a gentle cleanser.
Tone (optional) with an alcohol-free, hydrating toner.
Apply our 18% vitamin C serum to slightly damp skin and let it absorb for about a minute.
Moisturize to help lock in hydration.
Apply SPF 30+. This step is non-negotiable. Vitamin C and sunscreen work well as a team for daytime protection, but sunscreen is what protects your skin from UV.

Vitamin C Serum FAQs.

What makes your 18% vitamin C serum different?

Our serum uses 18% 3-O-ethyl ascorbic acid, a stable form of vitamin C, instead of L-ascorbic acid, which oxidizes easily. We pair it with niacinamide and hyaluronic acid and package it in an airless pump to help keep the formula fresh.

Can I use vitamin C and niacinamide together?

Yes. Our vitamin C serum with niacinamide combines both in one formula. Vitamin C helps visibly brighten, and niacinamide helps improve the look of uneven tone and pores.

Does your vitamin C serum help with dark spots?

With consistent daily use and daily sunscreen, our vitamin C serum helps fade the look of dark spots and post-blemish marks and helps skin look more even. Everyone’s skin is different, so results vary.

Is your vitamin C serum fragrance-free and good for sensitive skin?

Yes, it’s a fragrance-free vitamin C serum made for all skin types, with soothing aloe and cucumber. If you have sensitive skin, patch test first and start every other day.

How much should I use, and when?

Apply 2 pumps to clean, slightly damp skin on your face and neck, ideally every morning. Follow with moisturizer and broad-spectrum SPF 30 or higher.

Why do you use an airless pump bottle?

Vitamin C is sensitive to air. Our airless pump has no dip tube and keeps outside air from flowing back into the bottle. That helps protect the formula, keeps it hygienic and dispenses a consistent amount with very little waste.

Have more questions? See all our vitamin C serum FAQs.

Latest From Our Skincare Blog.

Get practical tips, ingredient deep dives and routines from the Trendy Blends team, from pairing niacinamide and vitamin C to building a routine for sensitive skin. New articles are added regularly.

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18% Vitamin C Serum for Brighter, More Even-Looking Skin.

Why Your Skin Will Love Our Vitamin C Serum.