Vitamin B Intensive Hydrating Hyaluronic Acid Serum, 1oz

Deep, lasting hydration and a calmer, more even complexion from niacinamide, hyaluronic acid, and ceramides.

Deep hydrationCalmsBrightens & evens

$90.00

1 oz · about a 2-month supply, around $1.50 a day

Best forDryness, dullness, and a stressed or sensitive moisture barrier
TextureWater-light serum
UseMorning and night, after cleansing or toning, before oil or balm
Clean, plant-poweredNo synthetic fragrance or parabensCruelty-freeMade in Mississippi
Better WithoutSee the 140+ ingredients we leave out of every formula

The serum every other product in your routine works better with.

What it is
The hydration backbone of the line: a results-focused serum that pairs two essential B vitamins with hyaluronic acid and plant-derived ceramides to hydrate deeply, strengthen the skin's moisture barrier, and even the complexion. The texture is gently lightweight with a very, very light scent, and it absorbs in moments, disappearing under everything you layer over it.

Who it's for
Every skin type, every routine, twice a day. Dehydrated skin gets the drink it's been begging for, sensitive and reactive skin gets one of the gentlest formulas we make, and skin using actives like vitamin C or peptides gets the barrier support that lets those ingredients do their best work.

Why this works, concern by concern
Think of your skin barrier as a brick wall: skin cells are the bricks, and lipids called ceramides are the mortar. When the mortar thins, which happens naturally with age and over-cleansing, moisture escapes and irritants get in. This serum rebuilds the wall from two directions at once.

To Strengthen the Barrier

The problem: a thinning moisture barrier lets water escape and irritants in.

  • Niacinamide (Vitamin B3). One of the most-studied ingredients in all of skin care. Research shows it helps skin produce more of its own ceramides, strengthening the moisture barrier and reducing water loss, while visibly refining pores and evening skin tone.
  • Glycosphingolipids (Vegetable Ceramides). The mortar itself, delivered directly. These plant-derived lipids are the same family of molecules your barrier is built from, replenishing what age and cleansing strip away.
To Hydrate and Plump

The problem: dehydration shows up as fine lines and skin that drinks in moisturizer without looking better.

  • Hyaluronic Acid. The reservoir. This molecule holds many times its weight in water, pulling moisture into the skin and visibly plumping the fine lines that dehydration causes.
To Soothe

The problem: sensitive, reactive skin that flares when you try something new.

  • Panthenol (Provitamin B5). The soother. A provitamin that supports the skin's own recovery, calms visible irritation, and adds another layer of lasting hydration.
And to Defend

The bonus: antioxidant and probiotic backup that keeps a healthy barrier healthy.

  • Ginkgo Biloba and Lactobacillus Ferment. Antioxidant defense plus probiotic support for the skin's microbiome, the living layer that keeps a healthy barrier healthy.

Why it belongs in your regimen
Hydration is the foundation everything else stands on. A strong, well-hydrated barrier holds results longer, tolerates actives better, and simply looks younger; this is why dermatologists put barrier health at the center of every routine for skin over 40. Use it morning and night, and every serum, oil, and balm you own starts performing better.

What it's like to use
Gently lightweight, with a very light scent and a clean, water-silk feel. Press 3 to 4 drops into the face, neck, and decolletage morning and evening; it absorbs quickly and layers under everything without pilling. Customers with the most reactive skin tell us this is the one that never makes them flare.

The facts
1 oz glass bottle with dropper · Made in Mississippi · Vegan and cruelty-free · No synthetic fragrance · No parabens

Ingredients
Aqua (Water), Ginkgo Biloba Leaf Extract, Propanediol (Sugar-Derived), Niacinamide (Vitamin B3), Panthenol (Provitamin B5), Organic Vegetable Glycerin, Glycosphingolipids (Vegetable Ceramides), Sodium Hyaluronate (Hyaluronic Acid), Xanthan Gum, Sodium Levulinate (Plant-Derived), Sodium Anisate (Plant-Derived), Sodium Phytate (Rice-Derived), Phenethyl Alcohol (Rose-Derived) and Lactobacillus Ferment (Plant-Fermented Probiotic).

$90.00

Watch

A closer look

The key ingredients

Open any ingredient in our Ingredient Library to see what it does and where it comes from.

What to expect

Real results take a full skin cycle. Here's an honest timeline.

First days

Deep, lasting hydration

Hyaluronic acid and B5 pull in moisture and hold it. The tight, thirsty feeling after cleansing disappears.

Week 3

Calmer, clearer skin

Niacinamide is strengthening the barrier and gently fading redness. Skin starts holding its hydration through the whole day.

Week 6

A balanced, even-toned complexion

Tone looks more uniform, fine lines look softened by steady hydration, and skin handles weather and stress with less drama.

Where it fits in your Miracle Ritual

1

Cleanse or tone

Apply to clean, slightly damp skin. Hyaluronic acid loves a little moisture to grab onto.

2

This serum

Press in 3 to 4 drops, morning and night. It layers under everything without pilling.

3

Moisturize

Seal it in with a balm or facial oil, like the Blue Algae Serum Balm, to lock the hydration deep in the skin.

Questions, answered

What is the skin barrier, and why should I care?
It's your skin's outermost defense: cells stacked like bricks with ceramide lipids as the mortar. A strong barrier holds moisture in and keeps irritants out; a weakened one means dryness, redness, and sensitivity. Age, weather, and over-cleansing all thin the mortar, and this serum is built specifically to replenish it.
What does niacinamide do for my skin?
It's one of the most-studied ingredients in skin care. Research shows niacinamide helps skin produce more of its own barrier ceramides, reduces moisture loss, refines the look of pores, and evens tone. Few single ingredients do this much, this gently.
Can I use it with my vitamin C or collagen serum?
Yes, and you should. This is the team player of the line: a strong, hydrated barrier helps your actives work better with less irritation. Use vitamin C in the morning and this serum at night, or layer it after the Collagen Rebuilding Serum any time.
How long does a bottle last?
Used twice daily at 3 to 4 drops, the 1 oz bottle lasts about two months. Hydration, barrier repair, and tone work for about $1.50 a day.