Skin Diligent

Vitamin C Serum In Oil

Vitamin C Serum In Oil
Vitamin C Serum In Oil
Vitamin C Serum In Oil
Vitamin C Serum In Oil
Vitamin C Serum In Oil
new
Vitamin C Serum In Oil
Vitamin C Serum In Oil
Vitamin C Serum In Oil
Vitamin C Serum In Oil
Vitamin C Serum In Oil
alias
new Skin Diligent

Vitamin C Serum In Oil

Vitamin C Serum In Oil

French iconic, ultra-stable, non-photosensitive Vitamin C serum-in-oil that visibly brightens, nourishes, and strengthens the skin barrier.

$90
$90
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Vitamin C Serum In Oil

1 oz / 30 ml
$90
  • Overview
  • Choosing your shade
  • How to use
  • Ingredients
  • Sustainable Packaging
  • About the brand
Highlights

Suitable for

All skin types

Why we stand behind it

Formulated in France with longevity scientists, this serum uses a rare, lipid-form Vitamin C molecule that does not degrade in light - meaning it can be used morning or night without concern. Its triple antioxidant system of Vitamin C, E, and punicic acid delivers prolonged protection against free radicals from UV exposure and pollution, visibly brightens and evens skin tone, and strengthens the skin barrier. The texture is luxuriously dry and absorbs instantly with a non-greasy finish - suitable for all skin types including sensitive and blemish-prone. The Vitamin C serum that finally gets it right.

In a 28-day independent study, 100% of testers noticed improved skin appearance and more hydrated skin, 95% saw a more even complexion, and 90% noticed a reduction in fine lines. Tested free of hormone disruption.

Key ingredients

Ascorbyl Tetraisopalmitate (Vitamin C): A powerful, non-photosensitive antioxidant that visibly brightens and evens skin tone.

Pomegranate Extract: Rich in punicic acid. Soothing. Visibly targets blemishes and the appearance of fine lines.

Hemp Seed Oil: Rich in omega 3 & 6. Deeply nourishing. Strengthens the skin barrier and limits dehydration.

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

Cruelty Free

Sustainable Packaging

Vegan

Gluten Free

Alcohol Free

Soy Free

Non GMO

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:

Pink/Cool

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.

Neutral

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.

Yellow/Warm

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.

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Usage

Shake before use. Apply after Cellular Hydration Serum (sold separately) in your AM routine. Follow with SPF. Non-photosensitive and non-greasy. Can also be used at night.

Pro-tip

When pairing with Skin Diligent Cellular Hydration Serum (sold separately) in the morning, you can skip the moisturizer! The two serums together replace a day cream.

Full ingredient list
Hemp Seed Oil (Cannabis sativa seed oil)*, Cocoa Extract (Theobroma cacao extract), Brassica napus extract, Camelina sativa seed oil*, Ascorbyl tetraisopalmitate, Pomegranate Extract (Punica granatum extract)*, Sunflower Seed Oil (Helianthus annuus seed oil), Moringa Oil (Moringa oleifera seed oil), Protium heptaphyllum resin, Fragrance (Parfum) (100% natural) *Organic ingredients
Fragrance

Radical Fragrance transparency

Credo believes in your right-to-know.

US law does not require fragrance transparency. Credo requires all brands to categorize the fragrance in each product and encourages full ingredient disclosure.

This fragrance is comprised of:

essential oils

certified organic fragrance

natural fragrance

naturally-derived fragrance

synthetic fragrance

Help us end beauty packaging waste

We co-founded the nonprofit Pact to demystify how to recycle your beauty packaging empties and divert waste from landfills.

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

Find your nearest credo store
Earn rewards through recycling login

1 Product Recycled = 10 Credo Rewards Points

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Earn rewards through recycling

1 Product Recycled = 10 Credo Rewards Points

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Skin Diligent

Our skin is in conversation with everything around it - the air, the light, the choices we make, and everything we apply to it. Epigenetics is the science of that conversation. It is the science of how our environment shapes the way we age. It is also the science that brought Skin Diligent into existence. Skin Diligent is a French epigenetic laboratory where the biology of longevity and the science of skin converge. Our research is led by a biologist and former Institut Pasteur scientist. Our formulas are conceived to act at the epigenetic level - supporting the biological processes that determine not just how our skin looks today, but how it ages over the years ahead. Every finished formula is tested free of estrogenic and androgenic endocrine disruption. Not individual ingredients. The whole formula. Because at the epigenetic level, what touches our skin matters completely. Each product is independently clinical tested and made to the highest standards of longevity science - born from years of asking what skincare could be if safety and efficacy were never separated. Dermatologist tested. Hormone Safe Tested. Skin Diligent.

SHOP ALL Skin Diligent

Overall rating: 4.9638553 / 5 from 166 reviews.

AI Generated Review Summary

This Vitamin C Serum in Oil, formulated in France, offers a luxuriously dry texture that absorbs instantly without being greasy. It provides significant hydration, visibly brightens and evens skin tone, and strengthens the skin barrier. Customers praise its comfort, glow, and ability to reduce fine lines.

Summary topics

  • Skin Hydration: 43%
  • Skin Glow: 5%
  • Skin Appearance: 6%
  • Skin Feel: 10%
  • Oil Texture: 6%

Review topics: [].

Review highlights

  • "A pleasant serum that smells good, has a soft texture and leaves you with a glowing complexion!" — Elise S.
  • "Great texture, very fast-acting, skin looks more hydrated, fine lines are reduced and my complexion glows." — Anonymous
  • "I love its texture and the way it instantly hydrates my skin." — Caroline B.

Reviews

An Amazing Serum

"I apply it every morning: it feels lovely, soothes my skin and has really brightened my complexion. This serum is now an absolute must-have"

— Audrey (5/5)

Addicted to this serum

"This serum has been part of my routine for three years and has evened out my skin tone. My sun spots have faded significantly and even disappeared. It helps me maintain beautiful skin despite the passing years."

— AURELIE B. (5/5)

I love it 😍

"I follow my little routine every morning: moisturising oil and vitamin C oil. In the evening, I apply retinol and Exosome Advanced cream. My husband has never complimented me so much on my skin. . . he thinks it looks more beautiful 😍"

— Ana V. (5/5)

Beautiful skin

"I've been using the serum for a year now. It makes my skin glow. It absorbs easily and nourishes my skin well. My skin is very smooth. As for my melasma, I haven't seen any difference, especially this summer."

— Linda D. (4/5)

Super serum

"Since I've been using it, my skin looks better, has fewer imperfections, is more hydrated, my pigmentation spots have reduced and my skin no longer feels tight! Just a little expensive!"

— Melanie S. (5/5)

Fine and comfortable texture, effective

"Perfect for my dry skin. Moisturising serum isn't enough for me, but the Vitamin C serum complements it perfectly. I still need to apply a nourishing cream on top."

— Sylvie P. (5/5)

This product beautifies the skin.

"I can't do without it anymore!"

— Valérie G. (5/5)

A lovely product

"It glides onto the skin beautifully and sinks in effortlessly. Because it is also an oil my skin feels that little bit more nourished. I haven’t been using it for long but look forward to it becoming part of my morning ritual."

— Emma P. (5/5)

Very enjoyable serum

"I have been using it every evening for six months now. My mature skin texture is gradually improving."

— Celine T. (5/5)

Amazing

"I love it so much and really helping my skin which is recovering after chemotherapy but am really sad as I dropped it on the bathroom floor yesterday and it’s smashed. So now need to order a new one."

— Cara J. (5/5)

Q&A