
Vitamin C
FREQUENTLY ASKED QUESTIONS ABOUT Vitamin C >

What is Vitamin C?
Vitamin C, also known as ascorbic acid, is a powerful antioxidant essential to skin health. Naturally found in the skin, it helps to protect against damage caused by different exposomes, such as oxidative stress, pollution, and UV Rays. However, Vitamin C in the skin levels decline over time due to factors such as age, stress, and sun exposure—accelerating visible signs of aging.
When formulated correctly, Vitamin C in skincare helps neutralize free radicals and improve skin tone, leading to visibly firmer, more radiant skin. Vichy’s Vitamin C serum, formulated with 16% Pure Vitamin C helps to visibly improve the look of fine lines & wrinkles and boost radiance.
How to Use Vitamin C Skincare in Your Routine
Vitamin C is best used in the morning to shield the skin against daily exposure to environmental aggressors. For maximum efficacy, choose a formula with 10–16% pure Vitamin C, like Vichy’s LiftActiv Vitamin C Serum, which visibly brightens and smooths skin in 14 days and paired with SPF in the AM, this lightweight serum can be a part of your daily routine.
Layering Vitamin C with complementary ingredients like Hyaluronic Acid can further enhance results—delivering both antioxidant protection and deep hydration. Be sure to store your Vitamin C product in a cool, dark place to preserve its potency over time.
.jpg?sw=360&sh=270&sm=cut&q=70)

What is Vitamin C?
Vitamin C, also known as ascorbic acid, is a powerful antioxidant essential to skin health. Naturally found in the skin, it helps to protect against damage caused by different exposomes, such as oxidative stress, pollution, and UV Rays. However, Vitamin C in the skin levels decline over time due to factors such as age, stress, and sun exposure—accelerating visible signs of aging.
When formulated correctly, Vitamin C in skincare helps neutralize free radicals and improve skin tone, leading to visibly firmer, more radiant skin. Vichy’s Vitamin C serum, formulated with 16% Pure Vitamin C helps to visibly improve the look of fine lines & wrinkles and boost radiance.
.jpg?sw=360&sh=270&sm=cut&q=70)
How to Use Vitamin C Skincare in Your Routine
Vitamin C is an antioxidant naturally found in the skin but also exists as a skincare ingredient. It can be found in many forms including L-Ascorbic Acid, Ascorbic Acid and Vitamin Cg (Ascorbyl Glucoside). Skincare Benefits: As the benchmark antioxidant ingredient, its presence in a formula help protect the skin against oxidative stress, reducing the signs of aging and brightening uneven skin tones.
Vitamin C Benefits



Products with Vitamin C
Liftactiv 16% Pure Vitamin C Brightening Serum
16% Pure Vitamin C Brightening Serum
Normaderm PhytoAction Acne Control Moisturizer with Salicylic Acid
Face Moisturizer With 2% Salicylic Acid

Answers to your frequently asked
Vitamin C questions.
Vitamin C is suitable for all skin types, especially those experiencing dullness, uneven tone, or early signs of aging. It’s ideal for anyone seeking to boost radiance, refine skin texture, and defend against daily environmental stressors. Vichy’s Vitamin C skincare formulas are dermatologist-tested and safe for even sensitive skin. Discover Vichy’s Hyaluronic Acid skincare products, which are safe and efficacious for daily use offering long-lasting hydration, plumping and strengthening of the skin’s moisture barrier.
Yes, Vitamin C and retinol can be used in the same routine—just not at the same time of day. Apply Vitamin C in the morning to protect skin from oxidative stress, and use retinol at night as a more intensive treatment. This combination targets multiple aging concerns while minimizing irritation when spaced apart.
Yes, Vitamin C and Hyaluronic Acid are a great combination of skincare ingredients. While Vitamin C brightens and protects, Hyaluronic Acid hydrates and plumps. Apply Vitamin C first, then follow with Hyaluronic Acid, such as the Minéral 89 48H Moisture Matte Sorbet, to lock in moisture and enhance skin smoothness and comfort.
Yes, Vitamin C and Niacinamide can be used together and complement each other well. Niacinamide brightens, while Vitamin C targets discoloration and provides antioxidant protection. Layering Vitamin C with Niacinamide skincare helps enhance brightening benefits, reduce dark spots and promote a more even skin tone.
Vitamin C is most effective when used in the morning. Applying it daily before sunscreen helps protect your skin from the harsh effects of the exposome including pollution and UV rays. This added protection makes it a vital step in your AM routine for brighter, healthier-looking skin.
Vitamin C can be used daily, ideally in the morning. Consistent use helps maximize its antioxidant and brightening benefits. Look for formulas designed for your everyday routine with Vitamin C like Vichy Capital Soleil UV-Age Daily SPF 60.
Yes, when formulated appropriately, Vitamin C is safe and effective for sensitive skin. Vichy’s dermatologically tested formulas use Vitamin C at an optimal concentration (e.g., 16% Vitamin C Serum) and are paired with calming ingredients like volcanic water to minimize irritation and support skin barrier health. Our formulas are allergy tested and safe for sensitive skin.
Vitamin C is a highly active antioxidant that can oxidize when exposed to air, light, or heat. This natural process causes the formula to darken over time—often turning yellow or amber. Slight color change to an amber color is normal and doesn’t always affect efficacy. To preserve potency, store your Vitamin C skincare in a cool, dry place and keep the container tightly sealed after each use. Vichy’s Vitamin C Serum is designed with a unique dropper that ensures minimal air reaches the formula. The amber bottle helps to prevent light from affecting the formula, and the bottle is not filled to the top for freshness.
RELATED ARTICLES

RETINOL

SALICYLIC-ACID







