About this product

Powered by 2% natural Vitamin C, ferulic acid, and sea buckthorn to enhance glow, even skin tone, and support resilience. A lightweight serum designed to brighten the complexion and support radiant, youthful-looking skin. 

Why you’ll love it: Formulated with 2% Natural Vitamin C to help brighten and even skin tone Infused with Ferulic Acid to support skin firmness and resilience.

Contains Sea Buckthorn to help nourish and revitalize the skin. Enhanced with Hyaluronic Acid and nourishing oils to support hydration and softness.

Suggested use

For external use only. Apply to clean skin and gently massage until absorbed.

Use morning and/or evening on face and neck. For daytime use, follow with sunscreen to help protect against UV-induced pigmentation. At night, it supports skin repair, brightening, and antioxidant defense.

Follow with moisturizer as desired. Store in a cool, dry place away from direct sunlight.

Avoid direct contact with eyes. If contact occurs, rinse with water. Discontinue use if irritation occurs.

Keep out of reach of children.

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

Try Vitamin C Serum for 30 days. If you're not satisfied, contact support@monthlees.com and our team will help with a refund, return, or store credit per our policies.

FDA Disclaimer

For external use only. Avoid direct contact with eyes. If irritation occurs, discontinue use.

This is a personal care / cosmetic product — not a dietary supplement. Contains sweet almond oil. Results may vary. Not intended to diagnose, treat, cure, or prevent any skin disease.

COSMOS NATURAL certified by ECOCERT Greenlife according to the COSMOS Standard (cosmos.ecocert.com).

What's in Vitamin C Serum?

This is a skincare brightening serum — not a supplement facts panel. The formula is 99% natural origin, Ecocert COSMOS Natural certified, and built around 2% ascorbyl glucoside, 1% ferulic acid, sea buckthorn, and dual hyaluronic acid for dark spots, anti-aging, and dehydrated skin.

  • Ecocert COSMOS Natural certified
  • 99% natural origin · 13% organic
  • 2% Ascorbyl Glucoside (vitamin C)
  • 1% Ferulic Acid
  • 1% organic sea buckthorn oil
  • Ascorbyl Palmitate · vitamin E
  • Dual hyaluronic acid · sodium PCA
  • Organic jojoba · almond · avocado · rosehip
  • Vegan · gluten free
  • Mandarin · floral · citrus aroma

Free of

  • Gluten
  • GMO ingredients
  • Artificial dyes
  • Parabens
  • Sulfates

Diet friendly

  • COSMOS Natural certified
  • 99% natural origin · 13% organic
  • 2% vitamin C disclosed
  • Vegan · gluten free
  • Anti-pigmentation · healthy glow
  • Recyclable packaging

Brighten. Firm. Glow.

A COSMOS Natural certified vitamin C serum for dark spots and dehydrated skin — 2% ascorbyl glucoside, 1% ferulic acid, and antioxidant-rich oils in one lightweight formula.

  • 2% natural vitamin C

    2% natural vitamin C

    Ascorbyl glucoside (2%) and ascorbyl palmitate are disclosed on the INCI — stabilized forms that brighten skin and support anti-aging benefits with less irritation than pure L-ascorbic acid.

  • Ferulic acid support

    Ferulic acid support

    1% ferulic acid helps support skin firmness and resilience — paired with vitamin C and vitamin E for antioxidant defense against environmental stressors.

  • Nourishing oils & HA

    Nourishing oils & HA

    Organic sea buckthorn, jojoba, sweet almond, avocado, and rosehip oils soften skin — dual hyaluronic acid and sodium PCA boost moisture for a glowing, youthful look.

  • COSMOS Natural certified

    COSMOS Natural certified

    99% natural origin, 13% organic — Ecocert COSMOS Natural certified, vegan, gluten free, with sweet mandarin-floral-citrus aroma and recyclable packaging.

How it works

  1. Apply

    Step 1: Apply

    Apply to clean skin and massage until absorbed — the lightweight serum delivers stabilized vitamin C, ferulic acid, and nourishing botanical oils without heaviness.

  2. Brighten

    Step 2: Brighten

    2% ascorbyl glucoside and ascorbyl palmitate help brighten and even skin tone — gentler and more stable than pure L-ascorbic acid for anti-pigmentation and healthy glow.

  3. Protect

    Step 3: Protect

    Ferulic acid, vitamin E, organic sea buckthorn, and rosehip oil help neutralize free radicals — dual HA and sodium PCA boost moisture for soft, resilient-looking skin.

Supplement facts

Formula breakdown — what each layer does

Three panels cover the serum — vitamin C actives, antioxidant oils, and full INCI disclosure. This is a personal care product, not a supplement facts panel.

Ascorbyl Glucoside
2% vitamin C
brighten
Ascorbyl Palmitate
vitamin C ester
stable
Ferulic Acid
1%
antioxidant
Tocopherol
vitamin E
Stabilized vitamin C forms — gentler than pure L-ascorbic acid.
Hippophae Rhamnoides (Sea Buckthorn) Fruit Oil➀
1%
organic
Rosa Canina (Rosehip) Fruit Oil➀
oil
organic
Simmondsia Chinensis (Jojoba) Seed Oil➀
oil
organic
Prunus Amygdalus Dulcis (Sweet Almond) Oil➀
oil
organic
Persea Gratissima (Avocado) Oil➀
oil
organic
Hydrolyzed Hyaluronic Acid
hydrate
Sodium Hyaluronate
hydrate
Sodium PCA
humectant
➀ Ingredients from organic farming. Contains sweet almond oil.
Aqua/Water
base
Glycerin➁
humectant
organic
Pentylene Glycol
Butylene Glycol
Cetearyl Alcohol
Glyceryl Stearate Citrate
emulsifier
Caprylic/Capric Triglyceride
Parfum/Fragrance
mandarin · citrus
Cellulose
Sodium Citrate
Xanthan Gum
Ricinus Communis (Castor) Seed Oil➀
oil
organic
Sodium Phytate
Citric Acid
Limonene➂
essential oil
Citral➂
Linalool➂
Citronellol➂
➁ Made using organic ingredients. ➂ From natural essential oils. 99% natural origin.
Research-backed supplement formula visual
Evidence-based ingredients

The science behind the ingredients

Vitamin C Serum is COSMOS Natural certified with 99% natural origin and full INCI disclosure — 2% ascorbyl glucoside, 1% ferulic acid, and sea buckthorn listed, not a mystery brightening formula.
2%
Ascorbyl glucoside
1%
Ferulic acid
99%
Natural origin
Review Ascorbyl glucoside

Stable vitamin C derivatives in skincare

Cosmetic science reviews describe ascorbyl glucoside as a stable, water-soluble vitamin C derivative that converts to ascorbic acid in skin — supporting brightening and antioxidant positioning with lower irritation potential.
Study Ferulic acid + vitamin C

Ferulic acid stabilizes vitamin C and E

Research on topical ferulic acid reports enhanced photoprotection when combined with vitamins C and E — relevant to the serum's antioxidant and environmental-defense positioning.
Review Sea buckthorn oil

Hippophae rhamnoides in dermatology

Phytotherapy reviews describe sea buckthorn fruit oil as rich in carotenoids, tocopherols, and fatty acids — supporting nourishing and revitalizing topical skin care applications.
Standard COSMOS Natural

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 brightening serums

How Monthlees Vitamin C Serum stacks up

Many vitamin C serums hide concentrations or use unstable L-ascorbic acid. Ours discloses 2% ascorbyl glucoside, 1% ferulic acid, and sea buckthorn with COSMOS Natural certification.
How Monthlees Vitamin C Serum stacks up
Primary focus
Brightening · dark spots · glow
Peptide anti-aging · firmness
Key actives
2% vitamin C + 1% ferulic + sea buckthorn
2 peptides + dual HA + ginkgo
Best for
Anti-pigmentation · dehydrated skin
Fine lines · normal & dry skin
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

$$$

Retailer markups
Middleman's cut
Cost of manufacture

What you'll pay at traditional retail

$$

Monthlees guest

What you'll pay as a guest

$

Monthlees member

What you'll pay as a Monthlees member

Stop overpaying for boutique vitamin C serums.

Premium C+E+Ferulic serums often cost $78–$165 at retail. Monthlees membership keeps COSMOS Natural certified brightening care affordable for daily AM/PM use.
Half the cost
Treatment Other guys Monthlees
Vitamin C Serum monthly supply One bottle — daily AM/PM use $45.00 $21.00
Boutique C+E+Ferulic serum Premium retail brands $78–$165/bottle 2% vitamin C disclosed
Drugstore vitamin C serum Often undisclosed concentration $22–$45/bottle 1% ferulic + sea buckthorn

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
  • Get your personalized Starter Routine Kit
  • Use flexible subscriptions to save on repeat orders
  • Manage everything easily from your Monthlees account
  • 30-day money back guarantee on all product purchases
  • Automatic savings applied at checkout
  • 100% flexible. Update, pause, or cancel anytime
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.

  • GMP Certified Facilities
  • FDA Compliant Facilities
  • Third party tested
  • Transparent product pricing

    Every product shows clear pricing for guests and members, so you can compare your savings before you buy.

  • Member savings applied automatically

    When you’re signed in as a member, your eligible discounts are applied automatically at checkout.

  • 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.

Which form of Vitamin C does the serum contain?
The serum contains stabilized forms of vitamin C: ascorbyl glucoside (2%) and ascorbyl palmitate. These derivatives are gentler on the skin and more stable than pure L-ascorbic acid — helping to brighten skin and offer anti-aging benefits without causing irritation.
Does it protect against environmental damage?
Yes. Vitamin C, ferulic acid, and antioxidant-rich oils — including organic sea buckthorn, rosehip, and vitamin E — help neutralize free radicals, protecting skin from pollution, UV, and other environmental stressors.
Can it be used both morning and night?
Yes. For daytime use, follow with sunscreen to help protect against UV-induced pigmentation. At night, it supports skin repair, brightening, and antioxidant defense — apply to clean skin and massage until absorbed.

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

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