Marie Veronique

C-Therapy Serum

Marie Veronique

C-Therapy Serum

C-Therapy Serum

A vitamin C serum formulated for sensitive skin.

Regular price $115
Sale price $115 Regular price
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C-Therapy Serum

1.0 oz / 30 ml
  • Overview
  • Choosing your shade
  • How to use
  • Ingredients
  • Sustainable Packaging
  • About the brand

Suitable for

All skin types. Safe for sensitive skin.

Why we stand behind it

This gentle-yet-powerful serum contains four powerful derivatives of vitamin C that are better suited to sensitive skin than l-ascorbic acid but deliver the same results: collagen production, antioxidant protection, and visible skin brightening.

This formula includes antioxidants glutathione and alpha-lipoic acid that help to protect the mitochondria, resulting in improved skin brightness and anti-aging benefits.

Can be used both day and night.

Key ingredients

Sodium ascorbyl phosphate: Prevents oxidation of debris in congested pores to clear and prevent breakouts.
Glyceryl ascorbate: Moisturizes to improve barrier function, provides sun protection, brightens skin.
Magnesium ascorbyl phosphate and tetrahexydecyl ascorbate: Provide anti-aging effects like collagen production enhancement and impede hyperpigmentation processes.
Alpha-lipoic acid and glutathione: Powerful antioxidants to help prevent damage to mitochondrial DNA.

this product meets

The Credo Clean Standard™

Every product we offer meets our industry leading standards for safety and sustainability.

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This product is

Gluten Free

What is an undertone?

An undertone is the color beneath the surface of your skin, which never changes (even with a tan). There are three types of undertones:


I see red or pink undertones around the perimeter of my face and neck.
My skin burns easily, but barely tans.
My skin looks better in silver jewelry than gold.


I see both pink and yellow undertones around the perimeter of my face and neck.
My skin sometimes burns and sometimes tans.
My skin looks good in both gold and silver jewelry.


I see yellow or golden undertones around the perimeter of my face and neck.
My skin rarely burns, but tans easily.
My skin looks better in gold jewelry than silver.

Find your shade match

Take our 1 minute quiz and get matched to real people with your skin tone and type.


Shake well. Smooth 1-2 pumps onto face/neck/chest. Use AMand PM. Layer serums to combine daily nutrients and address skin concerns.
If irritation occurs discontinue use and consult physician. Keep in a cool, dry place, out of direct light. *Use within 6 months of opening.

Full ingredient list

Click or tap an ingredient to learn more

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How to recycle your empties

1. Disassemble and clean all components

2. Pick the right disposal bin

3. Drop off your empties at your nearest Pact bin

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Marie Veronique

Marie-Veronique Nadeau is a chemist who founded Marie Veronique in 2002. As a trained esthetician and a former high school chemistry teacher, she continues to lead the way towards safe yet effective skincare. Collaborating with her physicist and bio-medical engineer daughter, Jay Nadeau, to carefully choose each ingredient in every product solving real skin issues and address aging at the source. Her vision is to give skin superior, non-toxic care drawing on nature's genius and science, with additional efforts to reduce packaging waste. Marie Veronique products have no outer packaging and are packaged in only glass bottles. Happy skin. Happy planet.

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