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Deal.ai › ALASTIN › Serums & Face Oils
Alastin
Alastin C-Radical Defense Antioxidant Serum

Alastin C-Radical Defense Antioxidant Serum

Best price now

$25.99at eBayChecked Nov 9

Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.

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Price facts

  • Last seen at $25.99 at eBay on Nov 9.
  • Checked at 2 stores.

Our take on the Alastin C-Radical Defense Antioxidant Serum

Alastin C-Radical Defense is a daytime vitamin C serum built around a stabilized form of vitamin C, with a 0.5 oz bottle that suits daily use on normal skin. It targets dullness and early signs of aging, and its antioxidant focus puts it alongside other premium vitamin C serums rather than drugstore options. Reviewers tend to like the lightweight feel and brightening effect, while some find the small bottle and the formula's sensitivity to light and air to be drawbacks. It suits people who already follow a serum routine and want a cosmetically elegant antioxidant step.

Best forDaily antioxidant step for normal skinShoppers wanting a lightweight brightening serumPeople building an anti-aging routineThose who prefer a premium cosmeceutical brand
Pros
  • Stabilized vitamin C formula aimed at brightening and antioxidant defense
  • Lightweight texture that layers well under moisturizer and sunscreen
  • Marketed for daily daytime use
  • Pairs with the rest of the Alastin skincare line
Cons
  • Small 0.5 oz bottle for a daily-use serum
  • Vitamin C serums can sting sensitive skin
  • Needs consistent use before visible change
  • Premium positioning against cheaper vitamin C options

Alastin C-Radical Defense Antioxidant Serum prices at every store

  • GrouponNew

    In stock

    $74.00Free shippingChecked Nov 9
    Visit Groupon
  • eBayNew

    Availability unknownSold by panacheoriginals (98.2% positive, 747 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $25.99Free shippingChecked Nov 9
    Visit eBay

Store links may earn us a commission. Some prices via Klarna.

Alastin C-Radical Defense Antioxidant Serum price history

Lowest price we've seen: $74.00 on Nov 9 at Groupon. Tracked across 1 store since Nov 9.

What reviewers say

Owners describe a light, fast-absorbing serum that leaves skin feeling smooth and looking brighter over weeks of use. Some mention tingling on first application and question how far a small bottle goes.

What people mention
  • TexturePraisedUsers say it sinks in fast and does not feel sticky under other products.
  • BrighteningPraisedRegular users report a more even, brighter look after several weeks.
  • Bottle sizeCriticisedSome owners feel the small bottle does not last long with twice-daily use.
  • SensitivityMixedA few report tingling or stinging, especially on reactive skin.
  • Results timelineMixedSome say changes are gradual and hard to notice without consistent use.

Specifications

Skin Type
Normal SkinSource
Weight (oz)
0.5Source
Content
Vitamins, Vitamin CSource
Skin Concern
WrinklesSource

Questions and answers

Is this serum for morning or night use?
It is designed as a daytime serum. Apply it in the morning before moisturizer and sunscreen, since vitamin C works well alongside daily sun protection.
Will it suit sensitive skin?
The formula is aimed at normal skin, and some users report tingling. If your skin reacts easily, patch test first and start with less frequent use.
How does it compare with other vitamin C serums?
It uses a stabilized vitamin C approach and a light texture, similar in concept to other premium antioxidant serums. Cheaper options exist, but many lack the same cosmetic feel.
How long until I see results?
Most vitamin C serums need several weeks of consistent use before brightening shows. Expect gradual change rather than an overnight effect.
Can I use it with retinol or exfoliating acids?
Many routines combine vitamin C in the morning with retinol at night. If you use strong acids, alternate or space them out to avoid irritation.
What size is the bottle?
It is a 0.5 oz bottle, sized for daily use over a few weeks to a couple of months depending on how much you apply.
Where is the Alastin C-Radical Defense Antioxidant Serum cheapest?
At eBay, for $25.99, as of our latest check.
Where can I buy the Alastin C-Radical Defense Antioxidant Serum?
2 stores we checked sell it, including Groupon, eBay.

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