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20% Vitamin C Brighten + Firm Serum

Daily dose for brighter & firmer skin.

4.9
Reviews
4.9

The rating for this product is 4.9 out of 5 stars. We have collected more than 920 reviews.

  • AMAZING VITAMIN C

    It’s my second time buying this serum. I immediately noticed a difference on my skin within a week of using the 20% VITAMIN C BRIGHTEN + FIRM SERUM. It gives a lit from within look. My hyperpigmentation from my occasional hormonal acne fade quicker. Love love love!!!

    CHRISA K.

    Verified buyer
  • SO FAR SO GOOD !

    The texture is gooey and thick for it is a waterless base, but if you apply it after wetting your face with toner the serum sinks in nicely, leaving a slight glowy finish. It did not irritate my skin whatsoever and I feel it protects my face all day long from pollution and sun damage due to the high level of antioxidants in the serum.

    SORAYA

    Verified buyer
  • RICH & NON-IRRITATING

    It's a very pleasant serum, rich in texture but not doesn't feel heavy. Use it for a couple of months and noticed that my post-acne spots are fading away.

    DARIIA O.

    Verified buyer

FAQ

All your questions about the 20% Vitamin C Brighten + Firm Serum

Is it vegan?

Yes, this product is vegan and does not contain any animal derivate.

Is this pregnancy safe?

This product is safe for use during pregnancy. We always recommend to ask your doctor prior the use.

AWARDS WON

  • 2021

    The Real Beauty Skincare Awards

  • 2021

    Her World Beauty Awards 20th Edition

  • 2021

    Woman and Home Best Beauty of 2021 Best Vitamin C Serum

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    20% Vitamin C Brighten + Firm Serum

    Register to receive a notification when this item comes back in stock.

    20% Vitamin C Brighten + Firm Serum
    20% Vitamin C Brighten + Firm Serum
    920 Reviews
    30 mL

    20% Vitamin C Brighten + Firm Serum

    Register to receive a notification when this item comes back in stock.

    Free shipping on orders above £70

    2 EXCLUSIVE GIFTS

    FREE Deluxe THE ONE SPF 50 + Advanced Daily Treatment 20ml (£79 value) on orders £110+.

    Allies Difference

    MORE BENEFITS

    Brightens, firms, provides antioxidant protection.

    MORE PROVEN ACTIVES

    0.05% Dimethylmethoxy Chromanol

    A potent antioxidant with a similar structure to Vitamin E. It's known for not only protecting against Reactive Oxygen Species (ROS) but also against Reactive Nitrogen Species (RNS) (both are reactive molecules that cause damage to cells and tissues and are responsible for several mechanisms which trigger skin ageing).

    0.05% Dimethylmethoxy Chromanol

    A potent antioxidant with a similar structure to Vitamin E. It's known for not only protecting against Reactive Oxygen Species (ROS) but also against Reactive Nitrogen Species (RNS) (both are reactive molecules that cause damage to cells and tissues and are responsible for several mechanisms which trigger skin ageing).

    Glutathione

    A potent antioxidant that helps target photoageing, battles oxidative stress, and reduces the concerns associated with exposure to free radicals. Leaves the skin looking clearer, firmer, and more even.

    Glutathione

    A potent antioxidant that helps target photoageing, battles oxidative stress, and reduces the concerns associated with exposure to free radicals. Leaves the skin looking clearer, firmer, and more even.

    Ergothioneine

    An antioxidant amino acid that helps brighten dullness, protects against pollution damage, and reduces signs of premature ageing, such as crow’s feet and fine lines.

    Ergothioneine

    An antioxidant amino acid that helps brighten dullness, protects against pollution damage, and reduces signs of premature ageing, such as crow’s feet and fine lines.
    MORE INNOVATION

    20% Ethylated L-Ascorbic Acid

    A newer, more stable form of Vitamin C. Fades imperfections, boosts collagen production, and provides excellent photoprotection underneath sunscreen.

    20% Ethylated L-Ascorbic Acid

    A newer, more stable form of Vitamin C. Fades imperfections, boosts collagen production, and provides excellent photoprotection underneath sunscreen.

    2% Orange Extract Complex

    Derived from citrus cells, it firms and smooths skin and provides a renewed complexion.

    2% Orange Extract Complex

    Derived from citrus cells, it firms and smooths skin and provides a renewed complexion.

    ALL INGREDIENTS

    20% Ethylated L-Ascorbic Acid

    ALL INGREDIENTS

    20% Ethylated L-Ascorbic Acid

    A newer, more stable form of Vitamin C. Fades imperfections, boosts collagen production, and provides excellent photoprotection underneath sunscreen.

    2% Orange Extract Complex

    ALL INGREDIENTS

    2% Orange Extract Complex

    Derived from citrus cells, it firms and smooths skin and provides a renewed complexion.

    0.05% Dimethylmethoxy Chromanol

    ALL INGREDIENTS

    0.05% Dimethylmethoxy Chromanol

    A potent antioxidant with a similar structure to Vitamin E. It's known for not only protecting against Reactive Oxygen Species (ROS) but also against Reactive Nitrogen Species (RNS) (both are reactive molecules that cause damage to cells and tissues and are responsible for several mechanisms which trigger skin ageing).

    Ergothioneine

    ALL INGREDIENTS

    Ergothioneine

    An antioxidant amino acid that helps brighten dullness, protects against pollution damage, and reduces signs of premature ageing, such as crow’s feet and fine lines.

    Propanediol
    Glycerin
    3-O-Ethyl Ascorbic Acid
    Benzimidazole Diamond Amidoethyl Urea Carbamoyl Propyl Polymethylsilsesquioxane
    Dimethyl Isosorbide
    Helianthus Annuus Seed Wax
    Polyglyceryl-10 Tristearate
    Ethoxydiglycol
    Dicaprylyl Ether
    Aqua (Water)
    Caprylyl Glycol
    Citrus Aurantium Dulcis Callus Culture Extract
    Acetyl Cysteine
    Dimethylmethoxy Chromanol
    Tocopherol
    Gluconolactone
    Leuconostoc/Radish Root Ferment Filtrate
    Xanthan Gum
    Silica
    Sodium Benzoate
    Calcium Gluconate
    Phenoxyethanol
    Glutathione

    ALL INGREDIENTS

    Glutathione

    A potent antioxidant that helps target photoageing, battles oxidative stress, and reduces the concerns associated with exposure to free radicals. Leaves the skin looking clearer, firmer, and more even.

    PRODUCT INFORMATION

    Note: 20% Vitamin C Serum should be applied to damp skin for best results.


    Our daily serum harnesses the cumulative effect of 20% Vitamin C, 2% Orange Extract Complex derived from citrus cells, and 0.05% Dimethylmethoxy Chromanol to create a targeted effect for all skin types. It forms a protective shield against daily external aggressors and pollutants while paving the way for brighter, firmer-looking skin. This antioxidant-rich formula promotes radiance-enhancing elasticity and fading dullness. Over time, skin glows with a brilliant smoothness.

    Its waterless base ensures that the colour of this formula does not change, and it stays potent. The unique formula has an initial balm-like quality (due to pure diamond powder that imparts instant radiance) that may feel thick at first but melts instantly in contact with damp skin.

    ALL SKIN TYPES

    especially those looking for a solution to firm and brighten skin

    DAILY USAGE (AM/PM)

    include it in your morning or evening routine

    1-2 PUMPS

    apply it on your face and neck

    IN YOUR REGIMEN

    STEP 03: SERUM

    1

    STEP 01

    CLEANSER

    Cleanse your skin to remove impurities and makeup. This prepares your skin for the following skincare steps.

    2

    STEP 02

    TONER & MIST

    Apply a balancing toner to help refine pores and restore your skin’s natural pH levels. Follow with a mist to lock in moisture.

    3

    STEP 03

    SERUMS & BOOSTERS

    Dispense 1-3 pumps of your serum or booster into your hands. Gently massage onto your face and neck, focusing on fine lines and wrinkles. Hydrates and rejuvenates.

    4

    STEP 04

    MOISTURISERS

    Apply eye and lip treatments to nourish these delicate areas. Follow with your moisturiser to lock in hydration. Finish with a face oil to provide an extra layer of moisture.

    5

    STEP 05

    SPF

    Complete your routine by applying SPF to shield your skin from harmful UV rays.

    STEP 03: SERUM

    DIRECTION OF USE

    1
    Preparation

    Shake well before every use. Use daily in the AM and/or PM, suitable under makeup or without.

    2
    Application

    After cleansing and misting or toning, apply 1-3 pumps all over your face and neck.

    3
    Follow-up

    Apply your favorite moisturizer or face oil afterward.

    4
    Optimal Absorption

    Apply to very damp skin for best absorption.

    Sun Protection

    Always use SPF as the final step in your routine.

    • BEFORE
      AFTER
    • Soothed, refined, radiant skin.
    • Overall brighter, healthier-looking complexion.​

    PROVEN RESULTS

    Daily dose for brighter & firmer skin.

    SEE BRIGHTER, MORE RADIANT SKIN IN 4 WEEKS.****

    IN JUST 1 USE:

    say the skin feels hydrated immediately after the first application.*

    see a healthy glow immediately after the first application.*


    IN 1 WEEK:

    see a more radiant, hydrated complexion.**


    IN 2 WEEKS:

    see firmer, brighter-looking skin.***


    IN JUST 1 MONTH:

    see more hydrated skin.****

    see an overall improvement in skin quality.****

    see smoother skin.****

    see clearer skin.****

    see firmer skin.****

    see a more refined skin texture.****

    see less tired-looking skin.****

    see a more even skin tone.****

    say dark spots & pigmentation appear faded.****

    agree the product works well with makeup.*****


    *Results based on self-assessment with 39 participants immediately after the first use.
    **Results based on self-assessment with 39 participants after twice a day use for 7 days. 
    ***Results based on self-assessment with 39 participants after twice a day use for 14 days. 
    ****Results based on self-assessment with 39 participants after twice a day use for 28 days.

    WITHOUT ADDED FRAGRANCE Rich Silky

    Formulated without Silicones, Sulfates, Denatured Alcohol, Synthetic Dyes, Added Fragrance or Essential Oils.

    • 100% CRUELTY-FREE
    • NOT TESTED ON ANIMALS
    • CLINICALLY PROVEN ACTIVES
    • DERMATOLOGISTS TESTED

    Coveted by those
    in the know.

    See why Allies of Skin 20% Vitamin C Serum is a game-changer.

    • 4.9

      20% Vitamin C Brighten + Firm Serum

      Daily dose for brighter & firmer skin.
      4.9
      920 Reviews

      20% Vitamin C Brighten + Firm Serum

      Register to receive a notification when this item comes back in stock.

    • 4.9

      20% Vitamin C Brighten + Firm Serum

      Daily dose for brighter & firmer skin.
      4.9
      920 Reviews

      20% Vitamin C Brighten + Firm Serum

      Register to receive a notification when this item comes back in stock.

    • 4.9

      20% Vitamin C Brighten + Firm Serum

      Daily dose for brighter & firmer skin.
      4.9
      920 Reviews

      20% Vitamin C Brighten + Firm Serum

      Register to receive a notification when this item comes back in stock.

    • @jijikinz 210K+
      4.9

      20% Vitamin C Brighten + Firm Serum

      Daily dose for brighter & firmer skin.
      4.9
      920 Reviews

      20% Vitamin C Brighten + Firm Serum

      Register to receive a notification when this item comes back in stock.

    • @nikkideroest 256K+
      4.9

      20% Vitamin C Brighten + Firm Serum

      Daily dose for brighter & firmer skin.
      4.9
      920 Reviews

      20% Vitamin C Brighten + Firm Serum

      Register to receive a notification when this item comes back in stock.

    I wanted to create a serum that would impart instant radiance while providing brightening and firming action. Part of what makes this serum unique is its Diamond Powder base which gives your complexion a lit-from-within glow that gets better with daily use.

    I wanted to create a serum that would impart instant radiance while providing brightening and firming action. Part of what makes this serum unique is its Diamond Powder base which gives your complexion a lit-from-within glow that gets better with daily use.

    SUPERCHARGE YOUR ROUTINE

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    Get Up & Glow Trio
    25% OFF
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    9 Reviews

    Get Up & Glow Trio

    20% Vitamin C Brighten + Firm Serum 20% Vitamin C Brighten + Firm Serum
    Peptides & Antioxidants Advanced Firming Daily Treatment Peptides & Antioxidants Advanced Firming Daily Treatment

    Our next-generation Hydrating Cleanser that preserves the skin’s vital nutrients and moisture levels while cleansing, meanwhile our daily 20% Vitamin C Brighten + Firm Serum forms a protective shield against daily external aggressors and pollutants while paving the way for brighter, firmer-looking skin. Combine it with our Peptides & Antioxidants Firming Daily Treatment which works in 5 ways to hydrate, firm, refine, provide antioxidant protection, and brighten skin.

    Get Up & Glow Trio

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    Customer Reviews
    4.9 Based on 920 Reviews
    5 ★
    90% 
    824
    4 ★
    9% 
    87
    3 ★
    1% 
    6
    2 ★
    0% 
    0
    1 ★
    0% 
    3
    Customer Photos
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    Filter Reviews:
    R
    29/01/2025
    Ralitsa
    Bulgaria Bulgaria
    I recommend this product
    • Skin type Dry
    • Tell us your gender Female
    • How old are you? 35

    The best!

    I absolutely love this product! I tried at least 10 others before discovering Allies. It instantly brightens the complexion, refreshes, illuminates, and definitely improves pigmentation! Moreover (something very important!), I did my research, and the ingredients are exceptionally pure and safe! As a doctor specializing in aesthetics and functional medicine, I highly recommend it!

    I
    28/01/2025
    Ilzira
    Kazakhstan Kazakhstan
    I recommend this product
    • Skin type Sensitive
    • Tell us your gender Female
    • How old are you? 42

    Great !!!

    I have used serum with vitamin C for about 3 months , I can surely say that it works more effective than other brands I used before . The result of great skin is after the first use . I admire it !!!

    VE
    15/01/2025
    Virginie E.
    France France
    I recommend this product
    • Skin type Combination
    • Tell us your gender Female
    • How old are you? 44

    Acquired taste, but great serum

    It took me a while to appreciate this serum. At first, I found it too greasy and sticky, and I hated its smell. I still don't love how it smells, but I have been mixing it with the green GF and multi peptides serum and l am finally enjoying it. I recommend it only for Winter time or for dry skin. I hope Allies could improve the smell but I now can see myself repurchase it.

    A
    12/01/2025
    Anonymous
    United States United States
    • Skin type ,Dry
    • Tell us your gender ,Female
    • How old are you? ,67

    20% Vitamin C

    This Vitamin C is thick and emollient compared with most watery formulas out there. I have used Timeless forever but feel this is a better fit for my dry skin.

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