What products can be used with the Vitamin C12 Serum?

Vitamin C serums are best used after cleansing and before moisturizer. Many dermatologists recommend applying vitamin C in the morning so its antioxidant protection can help defend against environmental damage during the day. Here is a simple routine to integrate Vitamin C12 Serum : Step 1: Cleanse (AM/PM)– Begin by washing your face with a brightening cleanser, such as Vitamin C Cleanser, to remove dirt, makeup, and impurities. Step 2: Treat (AM) – Apply Vitamin C12 Serum evenly to clean, dry skin. Step 3: Moisturize (AM/PM) – Follow with a lightweight moisturizer like Toleriane Double Repair Moisturizer to hydrate and protect the skin barrier. Step 4: Protect (AM) - Finish your morning routine with a broad-spectrum daily sunscreen, such as Anthelios UVAirTM SPF 50 Serum Sunscreen.

Should I use the Vitamin C12 Serum during my day or night routine?

For best results, we recommend using the Vitamin C12 Serum during the daytime.

Should the Vitamin C12 Serum be applied over or under moisturizer?

After cleansing the skin, the Vitamin C12 Serum should be the next step in your daytime skincare routine before moisturizer and sunscreen. Allow the serum to absorb into the skin before applying moisturizer.

Why is my Vitamin C serum changing color over time?

Vitamin C can vary in shade. Pure vitamin C can react on contact with the air, causing it to change color; but it’s still effective. We recommend storing our Vitamin C Serum at normal room temperature.

Can you use the Vitamin C Serum with Retinol?

Yes, but it is important to use the Vitamin C12 Serum during the daytime and any products containing retinol in the evening. If you're planning on using retinol creams during the morning, always use sunscreen.

What does Vitamin C serum do for your face?

Vitamin C serums can help prevent early signs of aging, brighten dull skin complexion and promote a more even skin texture. Learn more about Vitamin C as an essential anti-aging ingredient.

Is this vitamin C Serum suitable for sensitive skin?

This serum is suitable for all skin types, including sensitive skin. It’s formulated with soothing ingredients like neurosensine and is often well tolerated even by those with sensitive skin wishing to improve radiance and fine lines.

LACK OF RADIANCE

Vitamin C12 Serum

Dermatological Anti-Aging 12% Pure Vitamin C Serum. Allergy Tested Formula

Old price $44.99 New price $35.99

This anti-aging vitamin c face and neck serum visibly reduces wrinkles, boosts skin radiance, and sm ... Read more

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La Roche-Posay

Vitamin C12 Serum

Dermatological Anti-Aging 12% Pure Vitamin C Serum. Allergy Tested Formula

Quantity

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or 4 installments of $9.00 by

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ANALYZE YOUR SKIN Discover your personal skin analysis with one photo

Pairs best with

Vitamin C Brightening Facial Cleanser

Anti-Aging Facial Cleanser with Vitamin C. Allergy Tested Formula.

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20% OFF ALL SERUMS

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KEY INGREDIENTS

12% Pure Vitamin C: Also known as L-ascorbic acid, this ingredient is commonly recommended by dermatologists. Within our formulas, this water-soluble vitamin is known for its antioxidant and visible anti-aging properties.
Salicylic Acid: Known for its effective exfoliating properties to help clear and refine the appearance of pores. An ideal choice for those concerned with clogged pores and oily skin.
Neurosensine: A synthetic dipeptide, also known as acetyl dipeptide-1 cetyl ester, used to help skin feel soothed.
Glycerin: Derived from vegetable sources, it's an excellent humectant. It helps hydrate skin by absorbing water from the surrounding environment.
Hyaluronic Acid (HA): A polysaccharide (carbohydrate polymer) found naturally within the skin. When used in a formula, HA is an effective humectant that can hold a large amount of water to help maintain the skin's moisture.
La Roche-Posay Thermal Spring Water: A soothing water sourced in the town of La Roche-Posay in France and a core ingredient in most of our products. It contains a unique combination of minerals, trace elements, and a high concentration of selenium, a natural antioxidant.

FULL INGREDIENT LIST:

AQUA / WATER / EAU • ASCORBIC ACID • CYCLOHEXASILOXANE • GLYCERIN • ALCOHOL DENAT. • POTASSIUM HYDROXIDE • POLYMETHYLSILSESQUIOXANE • POLYSILICONE-11 • DI M E T H I C O N E • P ROP Y L E N E G LY COL • PENTAERYTHRITYL TETRAETHYLHEXANOATE • C13-14 ISOPARAFFIN • TOCOPHEROL • SODIUM HYALURONATE • HYDROLYZED HYALURONIC ACID • ADENOSINE • ACETYL DIPEPTIDE-1 CETYL ESTER • PEG-20 METHYL GLUCOSE SESQUISTEARATE • P O L OX AME R 3 3 8 • S A L I C Y L I C A C I D • POLYACRYLAMIDE • TOLUENE SULFONIC ACID • AMMONIUM POLYACRYLOYLDIMETHYL TAURATE • XANTHAN GUM • CAPRYLYL GLYCOL • DISODIUM EDTA • BHT • LAURETH-7 • PARFUM / FRAGRANCE

HOW TO
APPLY

QUANTITY
3-4 Drops
WHEN
MORNING
After cleansing face
WHERE
ON FACE & NECK
Taking care to avoid eye area
APPLICATION TIP
Gently massage the serum with your finger tips. Follow with a daily moisturizer
and SPF.
Pure vitamin C can react on contact with the air, causing it to turn yellow.
But it's still effective.

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KEY DERMATOLOGICAL
INGREDIENTS

La Roche-Posay follows a strict formulation charter and stringent clinical testing for efficacy and safety, even on sensitive skin.

Pure Vitamin C

This water-soluble vitamin is known for its antioxidant and visible anti-aging properties.

Neurosensine

A synthetic dipeptide used to help skin feel soothed.

Product Safety

Dermatologist Tested for Safety

Non Comedogenic

Oil Free

Allergy Tested

Ophthalmologist Tested

Suitable for Sensitive Skin

Paraben Free

THE DERMATOLOGICAL POWER OF 12% VITAMIN C
FOR VISIBLE WRINKLE REDUCTION

After 8 weeks*

-41% reduction in wrinkles
+70% improvement in radiance
+83% improvement in smoothness
92% saw clinically improved fine lines

*Based on average clinical scoring on 63 subjects after
applying the product for 2 months, twice a day

ULTRA-LIGHT TEXTURE
NON-GREASY FAST-ABSORBING AND GENTLE

All skin types
Wrinkles, fine lines
Lack of radiance
Sensitive skin
Uneven skin texture and tone

DERMATOLOGIST INSIGHT

"I recommend that all of my patients incorporate vitamin c into their daily skincare routine regardless of their skin type or tone. It helps boost skin's radiance, reduce the appearance of wrinkles, and even skin tone with a visible brightening effect.“

Board Certified Dermatologist, Dr. Anna Karp
*Sponsored Dermatologist

Frequently Asked Questions

Vitamin C serums are best used after cleansing and before moisturizer. Many dermatologists recommend applying vitamin C in the morning so its antioxidant protection can help defend against environmental damage during the day.

Here is a simple routine to integrate Vitamin C12 Serum :

Step 1: Cleanse (AM/PM)– Begin by washing your face with a brightening cleanser, such as Vitamin C Cleanser, to remove dirt, makeup, and impurities.
Step 2: Treat (AM) – Apply Vitamin C12 Serum evenly to clean, dry skin.
Step 3: Moisturize (AM/PM) – Follow with a lightweight moisturizer like Toleriane Double Repair Moisturizer to hydrate and protect the skin barrier.
Step 4: Protect (AM) - Finish your morning routine with a broad-spectrum daily sunscreen, such as Anthelios UVAir^TM SPF 50 Serum Sunscreen.

While Vitamin C12 Serum is designed for all skin types, it is better suited for dry and normal skin.

For oily and combination skin, we recommend Vitamin C12 Oil Control Serum, a liquid, clear serum that refines skin texture and rebalances skin for oil control and healthy glow.

Not sure which one is right for you? MyRoutine AI, La Roche-Posay’s free skin analysis tool, can help. The entire AI skin analysis process takes less than 3 minutes. After uploading a selfie and answering a few questions about your skin, MyRoutine AI instantly delivers your results and personalized skincare routine.