Vitamin C 20% Serum

Name: Vitamin C 20% Serum
Brand: Topix
SKU: SBB-VCS-1.0
Price: 138.0 USD
Availability: InStock
Rating: 5.0 (153 reviews)

A triple-action antioxidant

5.0

Rated 5.0 out of 5 stars

153

Boost your skin’s radiance and support healthy collagen production with our potent 20% L-Ascorbic Acid and THD Ascorbate vitamin C serum.

Our triple-action antioxidant is short and long-acting, featuring a time-released delivery system to deliver a highly-concentrated dose of Vitamin C that transforms dull, aging skin into a bright, glowing complexion. This age-defying staple provides antioxidant protection, supports healthy collagen production, and visibly reduces hyperpigmentation, delivering the kind of long-term benefits you want to make a mainstay in your routine.

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Recommended For

Normal, combination, dry, and mature skin types.

How To Apply

Once or twice daily after cleansing and toning, apply 5-6 drops to the face, neck, and chest and gently massage onto the skin.

When To Use

Apply every morning, and optionally at night for added benefits.

Texture

Feels like a weightless serum that instantly soaks into the skin & creates a subtle bounce on the skin’s surface.

Ingredients

Methyl Trimethicone, Cyclopentasiloxane, Trimethylsiloxysilicate, Tetrahexyldecyl Ascorbate, Dimethiconol, Ascorbyl Glucoside, Ascorbic Acid, Arbutin, Phyllanthus Emblica Extract, Ascorbic Acid/Orange/Citrus Limon/Citrus Aurantifolia Polypeptides, Arctostaphylos Uva Ursi (Bearberry) Leaf Extract, Ascorbyl Palmitate, Purified Water, Citrus Terpenes, Phospholipids, Tocopheryl Acetate, Retinyl Palmitate, Superoxide Dismutase, Ubiquinone, Phenoxyethanol.

Vitamin C 20% Serum

$138.00

Visibly brightens dull skin and improves skin’s firmness

while defending against free radical damage.

BENEFITS

Leaves the skin with a dewy glow and improves the overall appearance of tone & texture

OUR INGREDIENTS

The Science Behind Results

L-ASCORBIC ACID

Brightens skin, reduces free radical damage, and supports collagen production

THD ASCORBATE

Evens skin tone, and visibly reduces pigmentation as the most stable form of Vitamin C

ARBUTIN

Visibly lightens dark spots and improves acne scarring

Co-Q10

Supports collagen and elastin stimulation and evens skin tone

Vitamin E

Works synergistically with LAA and THD for continuous skin protection while nourishing the skin’s barrier & neutralizing free radicals

OUR INGREDIENTS

The Science Behind Results

L-ASCORBIC ACID

Brightens skin, reduces free radical damage, and supports collagen production

THD ASCORBATE

Evens skin tone, and visibly reduces pigmentation as the most stable form of Vitamin C

ARBUTIN

Visibly lightens dark spots and improves acne scarring

Co-Q10

Supports collagen and elastin stimulation and evens skin tone

Vitamin E

Works synergistically with LAA and THD for continuous skin protection while nourishing the skin’s barrier & neutralizing free radicals

Morning Routine

Cleanse / to wash and cleanse
Tonic / to brighten and Clarify
Vitamin C / to protect and brighten
Serum / to amplify results
Eye Cream / to depuff and fight wrinkles
Moisturizer / to hydrate and smooth
Sunscreen / to protect against UV damage

Evening Routine

Cleanse / to remove makeup and impurities
Tonic / to tighten and illuminate
Serum / to boost results
Eye Cream / to hydrate and restore
Retinoid / to support collagen and fight aging
Moisturizer / to hydrate and smooth

5.0

Rated 5.0 out of 5 stars

Based on 153 reviews

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153 reviews

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SK
Sara K.
Verified Buyer
I recommend this product
Skin Type: Dry
Age: 18-35
Rated 5 out of 5 stars
8/23/25
Best Vit. C hands down
I’ve used 5+ different medical grade vitamin Cs and this is by far my favorite. Would highly recommend
Was this helpful?
KB
Kerri B.
Verified Buyer
I recommend this product
Skin Type: Normal
Age: 35-54
Rated 5 out of 5 stars
8/22/25
Great Product!
I have been using this product every day and night for about 3 months. My skin is so much brighter, less hyperpigmentation, and overall, just feels great! I love all of Blair's products, but this might be my favorite.
Was this helpful?
T
Tricia
Verified Reviewer
I recommend this product
Skin Type: Normal
Age: 55+
Rated 5 out of 5 stars
8/17/25
Incredible
By far the best vitamin c serum I’ve ever used. It has done so much for my skin!! I get compliments all the time. I love putting it on every morning.
Was this helpful?
S
Stephanie
Verified Reviewer
I recommend this product
Skin Type: Combination
Age: 35-54
Rated 5 out of 5 stars
8/15/25
Goes on like butter
I've used almost all Vitamin C serums on the market (Skinceuticals, Paula's Choice, Obagi, etc.) and for the price point, Blair's is the one I always come back to. It goes on silky and absorbs quickly (you'll think it is going to be oily/greasy but it absorbs smooth). Not to mention my skin looks incredible. For the price and results, this is the best option on the market for medical grade Vitamin C.
Was this helpful?

Vitamin C 20% Serum

A triple-action antioxidant

Need Skincare Help?

Vitamin C 20% Serum

Visibly brightens dull skin and improves skin’s firmness

while defending against free radical damage.

BENEFITS

Visibly brightens dull skin and improves skin’s firmness

while defending against free radical damage.

BENEFITS

OUR INGREDIENTS

The Science Behind Results

L-ASCORBIC ACID

THD ASCORBATE

ARBUTIN

Co-Q10

Vitamin E

OUR INGREDIENTS

The Science Behind Results

L-ASCORBIC ACID

THD ASCORBATE

ARBUTIN

Co-Q10

Vitamin E

Customer Care

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