How soon will I see results?

Most users report noticeable improvements in skin texture and tone within 4-6 weeks of consistent use, with full results taking up to 3 months. User results may vary.

Can I use it with retinol, niacinamide, or exfoliants?

Yes to all three. The old rule about vitamin C not mixing with niacinamide comes from a lab scenario, not a bathroom shelf — use them together freely. Retinol and exfoliants are best kept to your evening routine, with the serum in the morning. That is not a compatibility problem; it just gives each active a clean run.

What did the clinical study actually show?

We commissioned an independent 8-week clinical study at Essex Testing Clinic (34 participants). Here is everything it showed: 94% saw visibly brighter skin 94% saw faded discoloration 94% skin texture felt smoother 91% saw more even skin tone 100% skin texture felt softer 91% saw improved skin clarityAnd 0% reported irritation — across the entire 8 weeks.

Is this good for oily or acne-prone skin?

Yes. This serum is non-comedogenic and kind to acne-prone skin — it works for all skin types, and can improve the appearance of acne discoloration over time.

Why is the serum amber, and how do I know it is still good?

It arrives with a natural amber tint — that is the formula on day one, not a serum that has turned. We use sodium ascorbyl phosphate (SAP), which is more stable than L-ascorbic acid and less prone to oxidation, so it holds its potency through the bottle rather than browning on your shelf in a matter of weeks. Keep it out of direct sun, and replace it about six months after opening.

What is the consistency like?

The Vitamin C Serum is a thin, gel-like serum that absorbs quickly and easily into skin.

Can I use it twice a day?

While we recommend using it in the morning, it can also be applied at night if you are not using another serum.

Does this work well under makeup?

Yes, our lightweight, fast-absorbing formula makes it an excellent base for makeup.

Does this have a fragrance?

No synthetic fragrance — ever. What you smell is the formula itself: konjac root, chamomile and clary sage give it a faint botanical aroma that dissipates within a minute of applying. If you've been avoiding vitamin C because of the smell, this is the one to try.

Vitamin C Serum

Name: Vitamin C Serum
Brand: Mad Hippie
SKU: 13964127423
Price: 33.99 USD
Availability: InStock
Rating: 4.86 (496 reviews)

1.02 fl oz

Our best-seller and the one that started it all. A stable vitamin C serum that visibly brightens, smooths, and helps improve the look of uneven tone.

94% Saw

Faded discoloration and brighter skin

In 8 weeks Clinical study · N = 34

Visibly brightens with C + E + ferulic acid
Reduces wrinkles with SAP vitamin C
Won’t irritate with chamomile & konjac

$33.99 - One Time Purchase

60 days, money-back guarantee

$0.00 each

0.00

Purchase Options

Selling Plans

One time Purchase

$33.99

each

$33.99

each

Delivered every:

30 days

Vitamin C Serum

$33.99

Absorbs in seconds.Hydrates on day one.

Dermatologist Recommended
Vegan & Cruelty-Free
No Synthetic Fragrances
Paraben & Phthalate Free

Vitamin C Serum: stable vitamin C, E + ferulic antioxidant trio; 94% saw brighter skin.

Formulated with
powerful actives

8 Actives

See what's inside

A barrier-safe form of vitamin C (SAP) that delivers visibly brighter skin and improved texture. It absorbs efficiently and is more stable than L-ascorbic acid — less prone to oxidation, so it stays potent through the bottle. Ideal for daily use, and kind to acne-prone skin.

These potent antioxidants offer a compounding effect when combined with vitamin C, improving the efficacy of the formula. Together, this gold-standard trio delivers stronger protection against oxidative stress and visibly brighter skin.

Holding up to 1000x its weight in water, this humectant binds moisture to the skin, plumping and reducing the appearance of fine lines.

These calming botanicals help soothe skin and reduce visible redness while supporting a healthy moisture barrier.

The Original Clean Skincare

Sourced responsibly &
free of harmful ingredients.

AM/PM

Cleanse → 2–4 drops on face & neck → moisturizer + SPF

Start with freshly cleansed skin.
Massage 2–4 drops into face and neck, avoiding the eye area.
Give it 30–60 seconds to fully absorb, then follow with moisturizer and broad-spectrum SPF.

Tip

Less is more — 2 drops covers most faces.

94% saw brighter skin saw brighter skin 100% skin felt softer skin felt softer 91% saw more even tone saw more even tone

Independent 8-week clinical — see all results

Using it over 5 years and nothing compares.

Clarissa B.

By the end of the bottle, my dark spots were 80% lighter — almost gone.

Donna K.

A nice glow — and my dark spots have diminished.

Maria I.

Tried expensive serums — none better. Affordable, never switching.

Rachel M.

FAQ

We commissioned an independent 8-week clinical study at Essex Testing Clinic (34 participants). Here is everything it showed:

94% saw visibly brighter skin

94% saw faded discoloration

94% skin texture felt smoother

91% saw more even skin tone

100% skin texture felt softer

91% saw improved skin clarity

And 0% reported irritation — across the entire 8 weeks.
It arrives with a natural amber tint — that is the formula on day one, not a serum that has turned. We use sodium ascorbyl phosphate (SAP), which is more stable than L-ascorbic acid and less prone to oxidation, so it holds its potency through the bottle rather than browning on your shelf in a matter of weeks. Keep it out of direct sun, and replace it about six months after opening.

In the press

Editors + dermatologists

“A miracle worker.”

“The blend of antioxidants (including ferulic acid and vitamin E) promotes a brighter complexion…”

Named the

Glow-Getter
Serum

“Sinks into your skin to shield it from damage… Yeah, that’s what we in the industry call MAGIC.”

“A sophisticated formula with ferulic acid to potentiate and help brighten & smooth.”

Dr. Debra JalimanBoard-certified dermatologist, NYC

Also recommended by Dr. Jaliman in Women’s Health

Conservation & Sustainability

of every web sale goes to conservation

Save the ElephantsPollinator Partnership

Packaged responsibly

Glass, endlessly recyclable
FSC-certified cartons
Soy-based inks
Pact Collective partner

5 stars: 460 (93%)
4 stars: 20 (4%)
3 stars: 7 (1%)
2 stars: 3 (1%)
1 star: 6 (1%)

Love it!

Love it! Recommended by my Sister!

Love this product! A few years ago a friend and I started noticing that our fine lines had

Love this product!
A few years ago a friend and I started noticing that our fine lines had started to reduce or disappear on our face. This is an essential morning routine product.

Products

Love all of your products

Feels good on the

Feels good on the skin

Loving my Vitamin C serum!

Loving my Vitamin C serum! Skin feels soft and very hydrated!

Helps brighten my face

Helps brighten my face. I have been using the Vitamin C serum for a couple years now.

I like the Vitamin C serum

I like the Vitamin C serum. With daily use it does brighten my skin. I use it in am, Vit A serum in pm, and Vit c cream over them.

I love this serum

I love this serum. It really does what it says- I’ve been using it for about 8 months now and my skin is definitely brighter and I just love the way it smells and feels in the morning. I layer it with the antioxidant facial oil. I’m 38, have very easy skin no acne or sensitivities.

This product is wonderful! I love all Mad Hippie products

This product is wonderful! I love all Mad Hippie products.

Love love love this serum.

I use this everyday before applying my make up! I’ve used it for a few years and now I use all their products and wouldn’t change anytime soon. Lightweight and can definitely use with oily skin.

This Vit C serum has boosted the glow in my skin

This Vit C serum has boosted the glow in my skin. I also see a slight improvement in fine lines. I recommend this product.

Gorgeous skin! Serum goes on smoothly and doesn’t over dry skin

Gorgeous skin! Serum goes on smoothly and doesn’t over dry skin. Nice to use a moisturizer after drying.

I started using the Mad Hippie products about 8 months ago

I started using the Mad Hippie products about 8 months ago. I fell in love with the line. The feel and light fresh smell is wonderful. The vitamin C serum light and only takes a small amount to cover face and neck. I use it morning and night along with the the vit c spray oil and moisturizers. I have seen a very clear difference in the texture and appearance of my skin. I will definitely be staying with these products!!

I have been using the vitamin c for years and I

I have been using the vitamin c for years and I love it!

i love this serum! i blend a few drops of this with a few drops of your antioxidant oil to create

i love this serum! i blend a few drops of this with a few drops of your antioxidant oil to create a lightweight, sheer, nourishing moisturizer that is effective for everyday wear.

I love all my Mad Hippie products

I love all my Mad Hippie products. My skin looks fantastic and whatever you guys put in this stuff has been keeping my psoriasis flare ups away. Thank you for making quality products that really work!

I have to say I’m super happy with vitamin C

I have to say I’m super happy with vitamin C. I noticed the difference in my skin in after only two weeks of using it. Very happy with Mad Hippy products.

Makes my skin feel great

Makes my skin feel great, more toned and youthful, love this product

Don't skip vitamin c!

I love this serum. I'm a true believe that vitamin c can be one of the most beneficial things to keep our skin young and healthy, but it tends to be skipped by many who want some super power serum. In other words, don't skip this simple, super beneficial step!

Love this product !

Love this product - it makes my skin glow and keeps me looking younger!

Product absorbs quickly into skin and blends well with the night cream

Product absorbs quickly into skin and blends well with the night cream. I haven't noticed any changes yet but its only been a few weeks.

I love it!

I love it! Makes my skin feel wonderful!

Have used this serum for 5 years

Have used this serum for 5 years. I have tried others but always go back to mad hippie. This serum dries quickly and is gentle for my skin. Highly recommend all products

Glowing is the outcome

Glowing is the outcome. I used this vit C faithfully And the skin softness And brightness is easy to notice

Face has been revived

This vit c serum has absolutely given life back to my face, its radiant and I love how much it helps my skin. No regrets on this product.

The best! Transformed my

The best! Transformed my skin

Love my MadHippie

My favorite Mad Hippie product! I’ve used it for 6+ years. I feel bright when I use it, everyday. Clean products that work for the win.

Great

Great serum

I love this natural serum

I love this natural serum. It feels fresh and is not sticky.

I absolutely love all the mad hippie products

I absolutely love all the mad hippie products. I suffer from adult acne and perioral dermatitis and my mad hippie routine is the only thing that helps. Thank you!