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Frequently Bought Together

Allies of Skin 20% Vitamin C Brighten + Firm Serum 30ml bottle for radiant, even-toned, firmer skin + Allies Of Skin Peptides And Omegas Firming Eye Cream 15ml with nourishing formula for under-eye firmness and smoothness + Allies Of Skin 0.1% Retinal And Peptides Advanced Repair Night Cream 48ml in sleek lilac container designed for intensive overnight skin renewal
Price for all three: £234.40

Allies of Skin 20% Vitamin C Brighten Firm Serum 30ml

Allies of Skin 20 Vitamin C Brighten Firm Serum is clinically formulated 20% vitamin C serum for brightening, firming, and antioxidant protection. 

30ml

 

Save: 21% Original price was: £93.00.Current price is: £73.50.

In stock (can be backordered)

Allies of Skin 20% Vitamin C Brighten + Firm Serum 30ml bottle for radiant, even-toned, firmer skin

Save: 21% Original price was: £93.00.Current price is: £73.50.

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Allies of Skin
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Key Beneifts
  • Brightens skin tone and reduces dullness
  • 20% stabilised Vitamin C promotes collagen and elasticity
  • Provides antioxidant protection from ROS & RNS
  • Protects against pollution and environmental ageing
  • Balm-like texture melts into damp skin
  • Waterless formula preserves stability and potency
  • Visibly improves firmness and clarity over time
Ideal For
Dull, tired, or uneven skin in need of brightening and firming care.

Description

Allies of Skin 20 Vitamin C Brighten Firm Serum for Daily Brightening

Allies of Skin 20 Vitamin C Brighten Firm Serum combines 20% ethylated L-ascorbic acid with cutting-edge antioxidants to brighten dull skin, restore firmness, and protect against daily environmental stress. Its unique balm-to-serum texture, enriched with diamond powder, transforms upon contact with damp skin to boost absorption and deliver a radiant finish.

A waterless formula ensures maximum Vitamin C potency, while the inclusion of Dimethylmethoxy Chromanol, Glutathione, and Ergothioneine targets oxidative stress, fine lines, and lack of tone. Developed for all skin types, it’s especially ideal for those seeking a simplified skincare routine with high-performance, scientifically proven results.

 

Dermoi skin scientists selected Allies of Skin 20 Vitamin C Brighten Firm Serum for its potent 20% ethylated Vitamin C formula, clinically proven to boost collagen, even tone, and protect against oxidative damage—delivering exceptional results in fewer steps.

Founded on the principle of simplified, intelligent skincare, Allies of Skin combines potent clinical ingredients with natural boosters to deliver visible results without complicated routines. From innovative vitamin serums to adaptive balms, the brand is redefining modern skin health.

Dermoi is proud to be an authorised retailer of Allies of Skin in the UK.

How to Use Allies of Skin 20 Vitamin C Brighten Firm Serum

Apply 1–2 pumps to damp skin on the face and neck. Use once daily, AM or PM. Layer under SPF or moisturiser for full effect.

Allies of Skin 20 Vitamin C Brighten Firm Serum Q&A

Can I use this serum with other actives like retinol or niacinamide?

Yes, it pairs well with both. Apply Vitamin C first on damp skin, then layer other serums.

Is it safe for sensitive skin?

Yes. Its stabilised form of Vitamin C (ethylated ascorbic acid) is less irritating than traditional ascorbic acid.

How long does it take to see results?

Expect brighter, smoother skin within 2–3 weeks; firming and tone improvement over 6–8 weeks.

Why does it feel thick at first?

That’s the balm-like texture activating on damp skin—it melts instantly and absorbs deeply.

Can I use this in the morning?

Absolutely—apply it before sunscreen to boost antioxidant protection throughout the day.

Key Ingredients

20% Ethylated L-Ascorbic Acid – A stabilised form of Vitamin C that fades pigmentation, boosts collagen, and protects against UV-induced skin ageing.
0.05% Dimethylmethoxy Chromanol – Shields against oxidative and nitrogen-based free radicals (ROS & RNS) that accelerate ageing.
Glutathione – Antioxidant tripeptide that supports detoxification and reduces the appearance of fine lines.
Ergothioneine – Brightens and protects against pollution; supports mitochondrial health in skin cells.
2% Orange Extract Complex – Derived from citrus stem cells to boost firmness and glow.

Ingredients

20% Ethylated L-Ascorbic Acid, 2% Orange Extract Complex, 0.05% Dimethylmethoxy Chromanol, Ergothioneine, Propanediol, Glycerin, Aqua, Dimethyl Isosorbide, Tocopherol, Glutathione, Helianthus Annuus Seed Wax, Silica, Sodium Benzoate.

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