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View compareA softer 10% L-ascorbic acid serum for sensitive skin and vitamin C beginners. Same fresh-blended, hand-dated quality as our stronger serums — just an easier place to start.
- Gentle 10% vitamin C — real results with less tingle
- Ideal for sensitive skin or your first vitamin C serum
- Brightens, supports collagen and helps target dark spots over time
- Fragrance-free, oil-free and fast-absorbing on all skin types
Gentle doesn't mean weakBecause it's blended fresh and hand-dated, even at 10% the vitamin C arrives fully active — freshness makes a lower strength genuinely effective.
A gentler dose, still fresh and fully active
Starting lower is the smart way to introduce vitamin C — but a low strength that's also gone stale barely does anything. We blend your C10 to order and hand-date it, so a gentle 10% still delivers real, active vitamin C to your skin.
Typical shelf serum
- Mixed weeks or months before you buy it
- No way to know how old the vitamin C really is
- Potency quietly drops as it oxidizes
- Often padded with fillers and fragrance
NuFountain C10 Gentle
- Blended the day your order ships
- Hand-dated so you see exactly how fresh it is
- A gentle 10% that's still fully active
- Short, transparent ingredient list — nothing you don't need
An easy introduction to vitamin C
All the core benefits of vitamin C, dialed to a strength sensitive skin can live with daily.
Gentle enough for daily use
At 10%, most sensitive and reactive skin can use it every day with little to no tingle.
Brightens & smooths
Helps fade dullness and dark spots for a clearer, more even, more youthful glow.
Supports collagen
Vitamin C helps your skin build collagen, softening the look of fine lines over time.
Simple, gentle, transparent
The same clean approach as our stronger serums, at a strength that's kind to sensitive skin.
L-Ascorbic Acid
A gentler dose of the active form of vitamin C — effective for brightening and antioxidant support with less risk of stinging.
Glycerin
A soothing humectant that keeps the serum hydrating and comfortable.

Full ingredient list
Purified Water, 10% L-Ascorbic Acid, Magnesium Sulfate, Glycerin.
Real results run on consistency
Even a gentle serum rewards consistency. Here's an honest timeline — results vary, and daily sunscreen protects your progress.
Comfortable start
Skin adjusts easily and often already looks a touch brighter and smoother.
Brighter tone
Dullness fades and skin looks clearer with steady daily use.
Ready to level up
Many people graduate to our C20 once their skin is comfortable with daily vitamin C.
Four gentle steps
Cleanse
Start with clean, dry skin.
Apply 5–6 drops
Pat gently over the face and neck. Little to no tingle at this strength.
Let it absorb
Give it a minute to dry before your next step.
Moisturize + SPF
Follow with moisturizer, and always sunscreen in the morning.
Vitamin C works best with daily sunscreen
We don't sell sunscreen — so this isn't an upsell. It's the single most important thing you can do to protect what your serum is working toward, and it's worth getting right.
Without daily SPF
- UV light breaks vitamin C down and undoes your brightening
- New dark spots and sun damage keep forming
- Collagen breakdown speeds up, so fine lines deepen
- Your serum is left fighting an uphill battle
Vitamin C + daily SPF
- Locks in and protects your brightening progress
- Helps stop new dark spots before they start
- Guards the collagen your serum is helping build
- The two work together for visibly better results
What to look for in a sunscreen
Broad-spectrum
Look for the words “broad-spectrum” — it protects against both UVA (aging) and UVB (burning) rays.
SPF 30 or higher
SPF 30 blocks about 97% of UVB. Go higher if you're outdoors a lot — just don't drop below 30.
Every single morning
Apply as the last step of your morning routine, over your serum. Reapply every two hours in direct sun.
A texture you'll wear
Mineral (zinc oxide, titanium dioxide) or a modern chemical filter — pick one that feels good so you use it daily.
The gentle-start favorite
Questions, answered
Who is C10 best for?
Should I start with C10 or go straight to C20?
Will I still see results at 10%?
How should I store it, and how long does it last?
What if it doesn't work for me?
Try it for real. If it's not for you, we'll refund you.
We stand behind every fresh-blended bottle with a 30-day money-back guarantee — no returns required. That's how confident we are in what "fresh" does for your skin.
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