Before and After of customer using 15% Vitamin C + EGF showing great results

How to layer 15% Vitamin C & EGF Serum in your skincare routine

Key claim from customer trial using 15% Vitamin C & EGF Serum for 4 weeks

Ingredient list for 15% Vitamin C & EGF Serum

Model holding bottle of 15% vitamin C Serum

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15% Vitamin C + EGF Serum

15% Vitamin C + EGF Serum | The INKEY List

Name: 15% Vitamin C + EGF Serum
Brand: Inkey List
SKU: IF023KE
Availability: InStock
Rating: 4.4 (593 reviews)

Brightening serum to target hyperpigmentation and uneven skin tone

4.4

Rated 4.4 out of 5 stars

4.4 Stars (593 Reviews)

£15.00 / 30ml

Worth 75 Points

WHAT YOU GET: A high-strength brightening serum powered by 15% Vitamin C & EGF. Targets hyperpigmentation, evens skin tone, and revives dull, tired skin for a visibly brighter, more even complexion.

WHY IT WORKS: Driven by 15% Ascorbyl Glucoside-a stable, antioxidant-packed form of Vitamin C that helps defend against daily environmental damage while visibly brightening skin. Plant-derived EGF peptides work to support skin regeneration, improving elasticity and firmness over time.

HOW IT FEELS: Lightweight, fast-absorbing, zero stickiness.

WHEN TO USE: AM & PM. Use this 15% Vitamin C serum after cleansing.

Suitable for:

All Skin Types
Pregnancy & Breastfeeding

Targets:

Hyperpigmentation
Dull Skin
Uneven Skin Tone

How to Use

Can be used in the AM and PM, but recommend in the AM. Antioxidants protect skin against daytime aggressors (UV, pollution and environmental stress), so you'd get more out of this egf serum if used in the morning.

On damp, cleansed skin, apply a pea-sized amount to face and neck. Gently pat in.

Follow with

Treatments → moisturiser.

Finish with SPF in your AM routine.

INKEY Tip

Layer serums thinnest to thickest. Wait 60 seconds between layers to avoid pilling.

Heads up

Don’t mix with Retinol, AHAs, BHAs or PHAs in the same routine. Use Vitamin C in the AM, Retinol or Acids in the PM.When adding new products to your skincare routine, we always recommend patch testing. Learn more here.

Storage

Store in a cool, dry place (15–25°C). Keep out of direct sunlight. Avoid eyes. For external use only. Keep out of reach of children.

Key Claims

87%

agree skin looks brighter*

88%

saw a visible improvement in the tone and texture of their skin*

84%

agree skin looks healthier & less dull*

*4-week independent consumer trial of 64 people

Ingredients

15% Ascorbyl Glucoside (Vitamin C): Stable, effective Vitamin C that converts on skin to brighten and target sun damage and hyperpigmentation.
1% Epitensive™ (EGF Epidermal Growth Factor): Plant-based peptide that supports skin renewal and boosts elasticity.

Aqua (Water/Eau), Ascorbyl Glucoside, Sodium Hydroxide, PEG-40 Hydrogenated Castor Oil, Phenoxyethanol, Benzyl Alcohol, Butylene Glycol, Xanthan Gum, Ethylhexylglycerin, Sodium Metabisulfite, Dehydroacetic Acid, Phytic Acid, Oligopeptide-1.

Epitensive™ is a trademark of Lipotrue and is used with permission

FAQs

HOW OFTEN CAN I USE IT? Once a day, AM. Always follow with SPF.

CAN I USE IT AT NIGHT? You can, but it works best in the morning to fight daily environmental damage.

CAN I LAYER IT WITH OTHER ACTIVES? Don’t layer with exfoliating acids (AHAs, BHAs) or Retinol in the same routine. Alternate: Vitamin C in the AM, Retinol or acids in the PM. Learn how to layer skincare.

CAN I USE IT WITH NIACINAMIDE? Yes - safe to layer with Niacinamide. But don’t mix with pure L-Ascorbic Acid.

DO I NEED TO WAIT BEFORE APPLYING OTHER PRODUCTS? If layering, give it 10 minutes before applying your next product to let EGF do its job.

IS IT SUITABLE FOR SENSITIVE SKIN? Yes - it’s a gentler Vitamin C. But always patch test. Learn more here

WHAT IS EGF? Epitensive™ is a plant-derived Epidermal Growth Factor. A plant-based peptide that supports skin renewal, elasticity and regeneration.

WHAT’S THE % OF EGF? 1% EGF.

WHAT’S THE PH? 6.8–7.2.

VITAMIN C VS EGF - WHAT’S THE DIFFERENCE? Vitamin C protects, brightens, and targets pigmentation. EGF boosts skin renewal and elasticity. Together? A power duo for brighter, smoother skin.

HOW IS THIS DIFFERENT TO YOUR 30% VITAMIN C? 30% Vitamin C uses pure L-Ascorbic Acid for experienced users. This 15% formula is gentler, beginner-friendly, and boosted with EGF.

WHY IS MY SERUM YELLOW? A light yellow tint is normal., the tint comes from the nature of the ingredients.

WHY HAS THE COLOUR CHANGED? Natural oxidation may cause colour shift but won’t affect safety or performance.

WHAT ELSE CAN I USE TO BRIGHTEN SKIN? Try our Fulvic Acid Cleanser alongside this serum. IS EGF SAFE? Yes. EGF is naturally found in the body. The amount here is tiny and safe for skin.

HOW LONG FOR RESULTS? Up to 6 weeks. Consistency is key - don’t overuse, more isn’t better.

IS IT VEGAN? Yes - certified by The Vegan Society.

SAFE FOR PREGNANCY & BREASTFEEDING? Yes - it’s pregnancy-safe.

CAN I USE WITH PRESCRIPTION PRODUCTS? Check with your doctor first.

No BS Skincare

From INCI to INKEY: Making the Unknown, Known

Every skincare product has an ingredients list.  We’re here to make it clear. What’s inside. How it works. Why you need it. We reveal the science, the truth, and the best ways to use it. Effective formulas. Straight talk. Real results. Knowledge empowers us.

We are B CORP. Our products are formulated with responsibly sourced ingredients, and packaged with 100% recyclable materials. Skin needs love, but so does our planet.

Carbon Net-Zero. All our emissions are offset annually through planet friendly projects with a focus on education.

Approved under the Cruelty Free International Leaping Bunny programme.

100% of our packaging is recyclable. Learn how to recycle your INKEY List products.

Certified by The Vegan Society

This product is;

Dermatologically tested

Fragrance-free

Gluten-free

Paraben-free

Pregnancy & Breastfeeding safe

Awards & Features

Delivery info

Standard tracked delivery (Evri)

£3.99 or FREE on your first order & orders over £30
(2-5 working days*)

Express tracked delivery (Evri)

£5.95 or FREE on orders £50+
(Up to 2 working days if ordered before 8pm, excluding weekends*)

*Find out more about delivery options and delivery area restrictions here.

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•Brightens uneven skin tone and dullness.
•Supports skin renewal and boosts elasticity.
•For dullness, first signs of ageing, and uneven skin tone.

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Callie has used INKEY products for 2 years.

Callie
"The products helped me sooooo much! I am so happy I found something that’s very light and doesn’t break my face out more."

Selly

4.4

Rated 4.4 out of 5 stars

Based on 593 reviews

Total 5 star reviews: 373 Total 4 star reviews: 151 Total 3 star reviews: 39 Total 2 star reviews: 14 Total 1 star reviews: 16

Reviews Summary

Customers say this serum absorbs quickly and feels lightweight on the skin. Many reviews mention a noticeable brightening effect and improved skin texture. While some notice immediate results in skin radiance, others report gradual improvements over time. The serum layers well with other products, though a few users find it can feel drying. Some mention it helps fade dark spots, while others note minimal changes. Reviews frequently praise the convenient pump packaging and non-sticky formula. Most find it gentle, though some with sensitive skin report it feels too strong.

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593 reviews

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Amanda T.
Verified Buyer
I recommend this product
Age Range 55 - 64
Skin Type Normal
Skin Concerns Texture, Hyperpigmentation, Fine Lines and Wrinkles, Under Eye Circles, Plumping
Sensitive Skin Friendly? Yes
Rated 4 out of 5 stars
31 minutes ago
Serum
Love the feel and texture of this serum.
I have been using it for a few weeks now and have noticed a brighter complexion and improved texture.
Was this helpful?
Alison S.
Verified Buyer
I recommend this product
Age Range 45 - 54
Skin Type Normal
Skin Concerns Fine Lines and Wrinkles, Dryness
Sensitive Skin Friendly? Yes
Rated 4 out of 5 stars
42 minutes ago
Using this as my Vit C product
So far so good, no irritation. I use this in the morning as my Vit C product before moisturizer and sunscreen. This is a serum and I like that there’s a ton of product in the container.
Was this helpful?
Kerry G.
Verified Buyer
I recommend this product
Age Range 55 - 64
Skin Type Combination
Skin Concerns Fine Lines and Wrinkles, Dehydration, Redness
Sensitive Skin Friendly? Yes
Rated 5 out of 5 stars
Yesterday
A brightening hero
Love this product ...absorbs well and gas really brightened my skin
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15% Vitamin C + EGF Serum | The INKEY List

Suitable for:

Targets:

How to Use

Key Claims

Ingredients

FAQs

No BS Skincare

Awards & Features

Delivery info

Dewy Sunscreen SPF 30

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15% Vitamin C + EGF Serum

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