Alastin Skincare C-Radical Defense Antioxidant Serum
Hand holding Alastin C-Radical Defense Antioxidant Serum beside a benefits list.
Beige swatch of Alastin C-Radical Defense Antioxidant Serum.
Alastin C-Radical Defense Antioxidant Serum bottle beside Shape and NewBeauty award graphics.
Model with a dab of Alastin C-Radical Defense Antioxidant Serum on her cheek.

Alastin Skincare C-Radical Defense Antioxidant Serum

$199.00
Shipping calculated at checkout.
#6 of 14 in Vitamin C
Size: 1.0 oz

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Antioxidant Serum
Vitamin C Defense
Suited for:
All skin types
Target concerns:
Environmental damage, dullness, uneven tone
Benefits:
Antioxidant defense, brightens
When to use:
Morning and evening

DESCRIPTION
Alastin Skincare C‑Radical Defense Antioxidant Serum – A high-performance antioxidant serum powered by TriHex™ peptide complex and a potent blend of vitamins C, E, and botanicals to neutralize free radicals, boost skin defenses, and reveal brighter, more resilient skin.
  • Protects against oxidative stress and environmental damage with vitamins C (ethylated ascorbic acid), E, and ferulic acid
  • Supports skin repair and resilience through TriHex™ peptide complex that stimulates collagen and elastin production
  • Brightens and evens tone while reducing future discoloration with niacinamide and botanical polyphenols
  • Hydrates and strengthens barrier with hyaluronic acid, ceramides, and lipid-rich emollients
  • Lightweight, fast-absorbing serum blends easily under moisturizer or sunscreen without greasy feel
Who benefits? Ideal for all skin types—especially those concerned with premature aging, environmental damage, or uneven tone—seeking potent antioxidant defense and visible skin resilience from a daily serum.
  • Fifteen Antioxidants Strong
  • Light Everyday Serum
  • Stabilized Vitamin C
  • All Skin Types
  • Elastin Preserved
  • Morning And Evening

PRODUCT DETAILS

How to use

In the morning and evening after cleansing, apply 1-2 pumps of serum to the face.
Avoid getting in the eyes. If contact occurs, rinse thoroughly with water.

Ingredients

Water/Aqua/Eau, Caprylic/Capric Triglyceride, Glycerin, Sodium Acrylates Copolymer, Squalane, Sodium Ascorbate, Ubiquinone, Ectoin, Physalis Angulata Extract, Betaine, Phosphatidylcholine, Camellia Sinensis Leaf Extract, Carnosine, Centella Asiatica Extract, Olea Europaea (Olive) Leaf Extract, Zingiber Officinale (Ginger) Root Extract, Ergothioneine, Dunaliella Salina Extract, Punica Granatum Fruit Extract, Bisabolol, Lactoferrin, Tremella Fuciformis Sporocarp Extract, Polyglyceryl-10 Laurate, Cetyl Alcohol, Sodium Benzoate, Xanthan Gum, Tocopherol, Helianthus Annuus (Sunflower) Seed Oil, Propanediol, Tocopheryl Acetate, Caprylyl Glycol, Mannitol, Lecithin, Phenoxyethanol, C12-15 Alkyl Benzoate, Ethylhexylglycerin, Caprylhydroxamic Acid, Citric Acid, Potassium Sorbate
Best Sellers Rank: #111 of 227

Ranked by units sold, last 90 days

Ideal for these Concerns: Dark Spots & Hyperpigmentation, Fine Lines & Wrinkles, Redness & Rosacea, Uneven Tone
SHIPPING & RETURNS

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For eligibility and return instructions, please see our returns policy.

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    Alastin Skincare C-Radical Defense Antioxidant Serum

    Alastin Skincare C-Radical Defense Antioxidant Serum

    How to use

    In the morning and evening after cleansing, apply 1-2 pumps of serum to the face.
    Avoid getting in the eyes. If contact occurs, rinse thoroughly with water.

    Ingredients

    Water/Aqua/Eau, Caprylic/Capric Triglyceride, Glycerin, Sodium Acrylates Copolymer, Squalane, Sodium Ascorbate, Ubiquinone, Ectoin, Physalis Angulata Extract, Betaine, Phosphatidylcholine, Camellia Sinensis Leaf Extract, Carnosine, Centella Asiatica Extract, Olea Europaea (Olive) Leaf Extract, Zingiber Officinale (Ginger) Root Extract, Ergothioneine, Dunaliella Salina Extract, Punica Granatum Fruit Extract, Bisabolol, Lactoferrin, Tremella Fuciformis Sporocarp Extract, Polyglyceryl-10 Laurate, Cetyl Alcohol, Sodium Benzoate, Xanthan Gum, Tocopherol, Helianthus Annuus (Sunflower) Seed Oil, Propanediol, Tocopheryl Acetate, Caprylyl Glycol, Mannitol, Lecithin, Phenoxyethanol, C12-15 Alkyl Benzoate, Ethylhexylglycerin, Caprylhydroxamic Acid, Citric Acid, Potassium Sorbate
    The Radical Fighter
    Why You'll Love It
    A clinically proven vitamin C serum that shields skin from environmental stress and preserves elastin.

    Scroll to see more product features

    • Alastin Skincare C-Radical Defense Antioxidant Serum

      Fifteen Antioxidants Strong

      A novel form of vitamin C plus 14 supporting antioxidants defends against daily environmental stressors.
    • Hand holding Alastin C-Radical Defense Antioxidant Serum beside a benefits list.

      Light Everyday Serum

      A lightweight pump serum that absorbs fast and sits well under moisturizer and sunscreen.
    • Beige swatch of Alastin C-Radical Defense Antioxidant Serum.

      Stabilized Vitamin C

      Sodium ascorbate teams with ubiquinone and ectoin to provide stable, well-rounded antioxidant coverage.
    • Alastin C-Radical Defense Antioxidant Serum bottle beside Shape and NewBeauty award graphics.

      All Skin Types

      Formulated to deliver strong antioxidant protection while staying comfortable enough for all skin types.
    • Model with a dab of Alastin C-Radical Defense Antioxidant Serum on her cheek.

      Elastin Preserved

      Helps conserve the skin's existing elastin, supporting firmness and bounce as skin ages.
    • Alastin Skincare C-Radical Defense Antioxidant Serum

      Morning And Evening

      Apply one to two pumps to the face after cleansing, each morning and evening.
    Antioxidant Powered
    Key Ingredients

    Scroll to see more ingredients

    • Vitamin C
      Antioxidant Brightening
      Vitamin C is a brightening antioxidant that helps even tone, defend against free radicals, and support a more radiant look.
    • Ectoin
      Barrier Defense
      Ectoin is a protective molecule that helps shield the skin from stress while supporting lasting hydration and comfort.
    • Green Tea
      Antioxidant Calm
      Green tea extract is a soothing antioxidant that helps calm the look of the skin and defend against everyday stressors.

    Need to Know

    Frequently Asked Questions

    When is the best time to use an antioxidant serum like this?
    This serum can be applied both morning and evening, using one to two pumps after cleansing. Antioxidants are especially valuable in the morning under sunscreen, where they help defend skin against daytime environmental stress.
    What kind of vitamin C does it use?
    It's formulated with sodium ascorbate, a gentler, more stable form of vitamin C, alongside 14 additional antioxidants such as CoQ10 (ubiquinone), green tea, and ectoin. This blend is designed to be effective while remaining comfortable for a wide range of skin types.
    Should I use this instead of or in addition to sunscreen?
    Think of it as a complement, never a replacement. An antioxidant serum helps neutralize free radicals that sunscreen alone can't, so the two work best layered together, with SPF always applied as your final daytime step.
    How is this different from a traditional L-ascorbic acid vitamin C serum?
    Traditional high-strength L-ascorbic acid serums can be potent but sometimes irritating. This formula uses a novel, gentler vitamin C plus a broad antioxidant complex, so it's a good option if stronger vitamin C serums have felt too harsh for your skin.
    Can I layer it with my other Alastin products?
    Yes, it's designed to fit seamlessly into a routine. Apply it after cleansing and before your moisturizer, and it pairs nicely with TriHex-based Alastin serums and creams.

    Product Comparison

    Find your best match

    Scroll horizontally to compare products.

    Product Alastin Skincare C-Radical Defense Antioxidant Serum Alastin Skincare C-Radical Defense Antioxidant Serum This product Alastin Skincare INhance Post-Injection Serum Alastin Skincare INhance Post-Injection Serum Revision Skincare CMT Post-Procedure Cream Revision Skincare CMT Post-Procedure Cream Obagi SuzanObagiMD Super Antioxidant Serum Obagi SuzanObagiMD Super Antioxidant Serum
    Suited for All skin types Skin after injectable treatments Post-procedure skin All skin types
    Target concerns Environmental damage, dullness, uneven tone Bruising, swelling, irritation Redness, irritation, dryness Dullness, fine lines, environmental stress
    Key ingredients Vit C, CoQ10, Green Tea: Antioxidant Defense. Peptides, Arnica: Post-Injection Recovery. Peptides, HA, Ceramides: Post-Procedure Recovery. Vit C, Silymarin, Peptides: Antioxidant Defense.
    When to use Morning and evening 4x daily after injections Twice daily as directed Morning on clean skin
    Key benefits Antioxidant defense, brightens Reduces bruising, calms, smooths Soothes, moisturizes, supports recovery Antioxidant defense, brightens, smooths
    Price
    $199.00
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    Ratings
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    Availability In stock In stock In stock In stock

    Reviews

    4.8

    Based on 42 reviews

    Showing 1–5 of 42 reviews

    Heather F.

    Love this product. Its my go to for everyday. Makes my skin feel ready for the day.

    Christine M.

    I only use Alastin products- i can only use products that have no perfume

    Danielle J.

    I hate how much I love this product.

    Joann E.

    Alastin has the best profucts

    Justine H.

    Amazing must have 🤩

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