Supreme C Serum by Westman Atelier | Westman Atelier

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Suprême C Serum

4.4 out of 5 star rating

133 Reviews

An ultra-concentrated, 100% Vitamin C gel-oil serum. Boost brightness and fade dark spots in just 2 weeks.

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Suprême C Serum

4.4 out of 5 star rating

133 Reviews

An ultra-concentrated, 100% Vitamin C gel-oil serum. Boost brightness and fade dark spots in just 2 weeks.

Original or Other

Full Size

Refill

SUBSCRIPTION

One-Time Purchase

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Add to Cart$325.00

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From $25/month, or 4 payments at 0% interest with KlarnaCheck purchase power

Suprême C Serum

Add to Cart$325.00

In Action

Pair With

Skin Activator Serum

$125.00

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Eye Activator Serum

$120.00

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Product Details

This single-ingredient serum is made with 100% THD Ascorbate, a potent-yet-gentle Vitamin C derivative crafted in Japan. Refined through a multi-step process for unparalleled stability and potency, this springy gel-oil texture absorbs 3x more efficiently than traditional vitamin C for results you can see.

This antioxidant-rich powerhouse works to diminish hyperpigmentation and supports skin’s natural collagen. Skin feels instantly hydrated, supple, looks brighter and visibly more even in just 2 weeks.

Original size and refill: 20ml

Ingredients

100% THD ASCORBATEULTRA-STABLE

Will not oxidize or degrade with exposure to light or air.

OPTIMAL ABSORPTION

Recognized by skin’s natural lipid structure and absorbs 3x more efficiently than traditional vitamin C.

POTENCY MAXIMIZED

Skin’s enzymes transform this molecule into pure vitamin C on contact

Full Ingredients List

- No PEGs

- No Synthetic Fragrance

- No Phthalates

- No Parabens

- No Silicones

- No Talc

- No Animal Testing

Ingredients

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All Ingredients:

TETRAHEXYLDECYL ASCORBATE

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The most powerful Vitamin C serum you’ll ever meet.

Potent-yet-gentle 100% Vitamin C gel-oil serum brightens and fades dark spots in just two weeks.

HOW TO USE

  1. 1 Apply after Skin Activator
  2. 2 Use 1-2 pumps to cover the face and pat excess on neck
  3. 3 Wait until fully absorbed before applying makeup

100%

agree skin tone appears more even, uniform

93%

saw a visible reduction in appearance of dark spots, hyperpigmentation

93%

agree skin looks significantly brighter

Based on a consumer study, 30 participants, 8 weeks

I’m all about investment pieces and that includes my skincare.

I like to apply Skin Activator and follow with Suprême C.

The combination of the two is otherworldly—it’s like everything is bouncing back.

Founder and makeup artist

Learn More About Suprême C Serum

What's New

Introducing Suprême C—Our 100% Vitamin C Serum!

Supremely stable, supremely effective. Meet the newest addition to the skincare wardrobe that's 100% vitamin C.

Read More

What's New

1 Potent Ingredient, 8 Weeks—Watch This Creative’s Skin Diary

Dallas-based model and creative, Olivia puts Suprême C to the test for eight weeks—watch to see her results in action!

Read More

Frequently Asked Questions

How do I incorporate this into my routine? How long should I wait until I move to my next step?

Apply 1-2 pumps onto cleansed skin morning and/or night - a little goes a long way! If you have oily skin, we recommend using Suprême C at night.

If using in combination with Skin Activator, apply Skin Activator first and follow with Suprême C.

Tip! Wait until the product is fully absorbed before applying makeup or coming into direct contact with fabric or sheets. Absorption time is different for everyone and depends on your preferences before moving onto a step like foundation application.

What is the texture like?

Suprême C has a non-comedogenic, gel-oil texture that deeply nourishes. Its lipophilic structure (oil soluble) is easily recognized by skin’s natural lipid structure, allowing the ingredient to be absorbed deep into the surface layer of skin where it is needed the most.

Is this safe for sensitive skin?

This formula has been clinically and dermatologist tested and can be used on all skin types, including sensitive skin. It is non-comedogenic, hypoallergenic and contains no fragrance.

The molecular structure of this formula is also ideal for sensitive skin - it maintains stability at a higher PH which means it is less likely to aggravate.

Is it really 100%? What does that mean?

This is a single ingredient serum – there are no additives or other ingredients – this means the formula is 100% THD Ascorbate. Since our Vitamin C is supremely stable (is not affected by light or air), this also means it is 100% potent every time you use it.

What is the difference between Skin Activator and Suprême C. What results should I expect?

Suprême C is a targeted, single-ingredient treatment serum designed to enhance brightness and diminish the appearance of dark spots and hyperpigmentation.

Skin Activator is an all-in-1 serum that softens fine lines, boosts firmness and deeply hydrates.

Both products can be used in conjunction to optimize your skin quality!

Reviews

4.4

133 Reviews

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Rating

RatingAll ratings

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5 stars

4 stars

3 stars

2 stars

1 star

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Verified Buyer

Skin Type

Skin Concerns

Age

Dry

Dullness, Aging, Hyperpigmentation

45-54 years old

It’s worth the splurge!!!

This vitamin C is truly incredible and nothing compares to it! I was very hesitant to purchase it because of the cost, but have noticed such a difference that I can’t stop using it. I get so many compliments on my skin! Yes, it’s an investment! Will you regret it? Absolutely not!!

Published date

06/21/26

Was this review helpful?

1

0

Verified Buyer

Skin Type

Skin Concerns

Age

Dry

Aging

55+ years old

Surprising

Results were immediate. Smoothed and tightened my skin. Never want to be without it.

Published date

05/25/26

Was this review helpful?

1

0

Verified Buyer

Skin Type

Skin Concerns

Age

Combination

Enlarged pores

55+ years old

Wonderful product!!!

Wonderful product!! I love how it absorbs into my skin.

Published date

05/23/26

Was this review helpful?

1

0

Verified Buyer

Skin Type

Skin Concerns

Age

Other

Hyperpigmentation, Aging

45-54 years old

Miracle serum

Absorbs so beautifully. Gives my skin a healthy glow. I’m obsessed

Published date

05/03/26

Was this review helpful?

1

0

Verified Buyer

Skin Type

Skin Concerns

Age

Dry

Hyperpigmentation, Aging

55+ years old

Supreme C Serum

I’ve only been using this product for a few days but I can already notice improvements in my skin’s pigmentation and radiance. I read quite a bit about it before purchasing as I've made many mistakes in the past-it is a bit costly for me but It’s a true luxury to use products that are not only effec...

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Published date

02/01/26

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1

0

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