Prebiotics and the skin microbiome
Dermatology reviews describe topical prebiotics and postbiotic ferments as ingredients that may help support a balanced skin microbiome and reinforce barrier function.
About this product
Formulated with bioactive ingredients and prebiotics, this gel serum helps reinforce the skin barrier, soothe visible irritation, and maintain microbiome balance for resilient-looking skin.
Suggested use
About monthlees
The supplement industry is built on inflated pricing, confusing labels, and aggressive marketing.
Monthlees exists to fix that.
We believe:
- Supplements should be clinically dosed
- Pricing should be transparent
- Testing should be independent
- And customers shouldn't pay for influencer commissions or retail margins
Instead of hiding costs inside the product price, we use a simple membership model — so you pay what supplements actually cost to make.
Shipping & returns
• Shipping: Orders are processed within 1–2 business days. Standard delivery takes 3–7 business days depending on your location.
• Returns: You may return or exchange products within 30 days of receiving your order. Items must be in original condition with proof of purchase.
If your item is defective or damaged due to manufacturing issues, we’ll gladly replace it at no additional cost.
30 Day Money Back Guarantee
FDA Disclaimer
What's in Bioactive Prebiotics Nourishing Serum?
- Ecocert COSMOS Natural certified
- 99% natural origin · 10% organic
- Lactobacillus ferment lysate prebiotic
- Hyaluronic acid · sodium PCA
- Dermatologically tested
- Vegan · gluten free · nut free
- Green · citrus · mint · woody aroma
Supplement Facts
Bioactive Prebiotics Nourishing Serum
Supplement Facts
Serving Size Daily use as directed
Servings Per Container See package label
Amount Per Serving
% DV
Formula highlights
Natural origin
99%
Organic origin
10%
Lactobacillus Ferment Lysate
prebiotic
Hydrolyzed Hyaluronic Acid
hydrate
Sodium Hyaluronate
hydrate
Sodium PCA
humectant
Full INCI ingredient list
Aqua/Water
—
Alcohol②
—
Glycerin②
—
Sodium PCA
—
Cellulose Gum
—
Algin
—
Lactobacillus Ferment Lysate
—
Parfum/Fragrance
green · citrus · mint
Sodium Phytate
—
Potassium Sorbate
—
Sodium Benzoate
—
Hydrolyzed Hyaluronic Acid
—
Sodium Hyaluronate
—
Pogostemon Cablin Oil
patchouli
woody
② Made using organic ingredients.
Other Ingredients: See full INCI list above. Formulated with green formulation principles and environmentally conscious production processes.
Free of
- Gluten
- Nuts
- GMO ingredients
- Artificial colors
Diet friendly
- COSMOS Natural certified
- 99% natural origin
- Prebiotic skincare
- Dermatologically tested
- Vegan · recyclable packaging
Prebiotics. Hydration. Barrier support.
-
Prebiotic microbiome care
Lactobacillus ferment lysate actively supports your skin's microbiome — going beyond standard hydration to help maintain long-term balance and resilience.
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Deep hydration
Hydrolyzed hyaluronic acid, sodium hyaluronate, sodium PCA, and organic glycerin② deliver multi-layer hydration for dehydrated skin and barrier repair.
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Barrier strengthening
Helps reinforce the skin barrier and soothe visible irritation — ideal for damaged skin barrier concerns on all skin types.
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COSMOS Natural certified
99% natural origin, 10% organic — Ecocert COSMOS Natural certified, dermatologically tested, vegan, gluten free, nut free, with recyclable packaging.
How it works
-
Step 1: Apply
Apply to clean skin and massage until absorbed — the lightweight gel serum delivers prebiotics, hyaluronic acid, and sodium PCA without heaviness.
-
Step 2: Nourish
Lactobacillus ferment lysate supports skin microbiome balance while hydrolyzed hyaluronic acid and sodium hyaluronate hydrate dehydrated skin.
-
Step 3: Protect
Helps reinforce the skin barrier, soothe visible irritation, and maintain long-term resilience — use morning for daily stressors or evening for overnight repair.
Supplement facts
Formula breakdown — what each layer does
Lactobacillus Ferment Lysate
prebiotic
microbiome
Key differentiator vs standard hydrating serums. Dermatologically tested.
Hydrolyzed Hyaluronic Acid
hydrate
—
Sodium Hyaluronate
hydrate
—
Sodium PCA
humectant
—
Glycerin②
humectant
organic
② Made using organic ingredients. 10% organic origin of total.
Aqua/Water
base
—
Alcohol②
solvent
organic
Cellulose Gum
gel structure
—
Algin
gel structure
—
Parfum/Fragrance
aroma
green · citrus · mint
Pogostemon Cablin Oil
essential oil
woody
Sodium Phytate
chelator
—
Potassium Sorbate
preservative
—
Sodium Benzoate
preservative
—
Vegan. Gluten free. Nut free. 99% natural origin.
Evidence-based ingredients
The science behind the ingredients
Bioactive Prebiotics Nourishing Serum is COSMOS Natural certified with 99% natural origin and full INCI disclosure — dermatologically tested, not a mystery serum. Explore context on prebiotics, hyaluronic acid, and barrier care below.
99%
Natural origin
COSMOS
Ecocert certified
Prebiotic
Lactobacillus ferment
Hyaluronic acid in topical skincare
Reviews of hyaluronic acid report its role as a humectant that binds water in the stratum corneum — supporting hydration and plumping in serum formulations.
Natural moisturizing factors and sodium PCA
Sodium PCA is a component of the skin's natural moisturizing factor (NMF) — cosmetic science literature supports its use as a humectant in barrier-supporting formulations.
COSMOS Natural certification standard
The COSMOS standard defines requirements for natural cosmetics — including ingredient origin, environmentally friendly processing, and responsible use of natural resources.
Compare prebiotic nourishing serums
How Monthlees Prebiotics Serum stacks up
Many hydrating serums stop at hyaluronic acid. Ours adds lactobacillus ferment lysate prebiotics with sodium PCA — full INCI disclosure and COSMOS Natural certification.
|
Primary focus
|
Prebiotic barrier + hydration
|
Niacinamide tone + barrier
|
|---|---|---|
|
Key actives
|
Lactobacillus ferment + HA
|
5% niacinamide
|
|
Certification
|
Ecocert COSMOS Natural
|
Ecocert COSMOS Natural
|
|
Member pricing available
|
Yes — Monthlees members
|
Yes — Monthlees members
|
Insider access to the world's best labs & supplement manufacturers.
Membership allows us to sell products for a fraction of the typical industry retail price. Think of it as an insider access pass to the warehouses of the supplement industry.
Monthlees members don't pay for:
- Middlemen
- Marketing & influencer costs
- Retailer markups
- Distributor margins
Stop overpaying for boutique prebiotic serums.
Premium prebiotic and microbiome serums often cost $55–$85 at retail. Monthlees membership keeps COSMOS Natural certified barrier care affordable for daily use.
| Treatment | Other guys | Monthlees |
|---|---|---|
| Prebiotics Serum monthly supply One bottle — daily AM/PM use | $66.00 | $26.10 |
| Boutique prebiotic serum Premium retail brands | $55–$85/bottle | COSMOS Natural certified |
| Drugstore HA serum Hydration only — no prebiotics | $15–$30/bottle | Prebiotic + HA + PCA |
Start your monthlees health journey with complete support
Your membership gives you access to better pricing, personalized guidance, and everything you need to build a healthy supplement & personal care routine that effortlessly fits your life.
- Unlock member pricing of 50-80% off on every product
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Member trust
Confidence built into every order
From clear member pricing to flexible subscriptions and responsible product standards, Monthlees is built to help you shop with confidence — without inflated markups, hidden tiers, or checkout surprises.
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Transparent product pricing
Every product shows clear pricing for guests and members, so you can compare your savings before you buy.
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Member savings applied automatically
When you’re signed in as a member, your eligible discounts are applied automatically at checkout.
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Subscriptions that stay flexible. Cancel anytime.
Start, pause, skip, or adjust product subscriptions from your account — without hidden hoops or confusing rules.
Frequently asked questions
Everything you need to know about Monthlees member pricing, subscriptions, and how checkout works.
What makes this serum different from a regular hydrating serum?
Unlike standard hydrating serums, this one is infused with prebiotics — lactobacillus ferment lysate — that actively support your skin's microbiome. It not only hydrates with hyaluronic acid and sodium PCA but also helps maintain long-term skin balance and resilience.
Should I use it in the morning or evening?
Both work well. Morning use helps protect against daily stressors; evening use supports overnight repair. Apply to clean skin and massage until absorbed, then follow with moisturizer and SPF in the morning.
Can I use it around the eyes?
Yes — the serum is gentle enough for the eye area. Apply carefully around the orbital bone and avoid direct contact with the eyes. If contact occurs, rinse with water.
Why I created monthlees...
When I was 19 years old, I was diagnosed with a brain tumor. That experience forced me to start asking deeper questions about how the human body actually works.
Over the next 18 months, I immersed myself in studying health, nutrition, and neuroscience — eventually earning my degree in Neuroscience from Duke University. Along the way, I discovered something powerful: the body is incredibly resilient & inherently self-healing when it’s given the right support.
Strategic nutrition and supplementation became a major part of my own health journey. And over the last two decades, I’ve devoted my life to helping millions of people around the world take a more proactive role in their health.
That experience completely changed how I thought about health — and ultimately shaped the way Monthlees was built.
I created Monthlees because I was tired of seeing people pay premium prices for supplements that were under-dosed, over-marketed, and difficult to trust.
My goal is simple: build the kind of brand I would want for myself and my family — with better ingredients, transparent formulas, meaningful dosages, and a business model built on long-term trust.
— Chris Walker, Founder of Monthlees
