Two small white bottles of Oxy-R Peptides serum are displayed. A black dropper tool lies nearby, and two drops of yellow serum are visible on the white surface
Two small white bottles of Oxy-R Peptides are displayed with drops of yellow serum. Text highlights PROFESSIONAL STRENGTH ACTION ON DARK SPOTS. Benefits listed are: Delivers brighter, more even skin in just 7 days, Fades visible dark spots in 1 month, Effective on all skin types & tones, and Hydrates & smooths the complexion.
A before-and-after comparison of a person's forehead shows faded dark spots. Dotted white circles highlight the areas of change. Below the images, text states Fades the look of dark spots in just 1 Month.
A visual of Oxy-R Peptides, showing two small bottles of the serum. A finger is pressing down on the black cap of a clear bottle, inside which an orange-brown liquid is visibly mixing, indicating activation. The second bottle is white with a black dropper and labeled "OXY-R PEPTIDES High-Strength Oxyresveratrol Brightening Peptide Serum." Text states: We split our formula across 2 click-activated bottles to ensure optimum potency for longer.
A HOW TO LAYER diagram illustrates skincare routines. The AM routine includes Tone (Medik8 Press & Glow), Target (Medik8 Oxy-R Peptides), Vitamin C (Medik8 C-Tetra Luxe), and Sunscreen (Medik8 Advanced Day Total Protect). The PM routine involves Cleanse (Medik8 Lipid-Balance Cleansing Oil), Target (Medik8 Oxy-R Peptides), Vitamin A (Medik8 Crystal Retinal), and Moisturiser (Medik8 Advanced Night Restore).
A white product carton for Medik8 Oxy-R Peptides stands next to two small white bottles of the serum. One bottle has a black dropper, the other a black cap.
Two small white bottles of Oxy-R Peptides serum are displayed. A black dropper tool lies nearby, and two drops of yellow serum are visible on the white surface
Two small white bottles of Oxy-R Peptides are displayed with drops of yellow serum. Text highlights PROFESSIONAL STRENGTH ACTION ON DARK SPOTS. Benefits listed are: Delivers brighter, more even skin in just 7 days, Fades visible dark spots in 1 month, Effective on all skin types & tones, and Hydrates & smooths the complexion.
A before-and-after comparison of a person's forehead shows faded dark spots. Dotted white circles highlight the areas of change. Below the images, text states Fades the look of dark spots in just 1 Month.
A visual of Oxy-R Peptides, showing two small bottles of the serum. A finger is pressing down on the black cap of a clear bottle, inside which an orange-brown liquid is visibly mixing, indicating activation. The second bottle is white with a black dropper and labeled "OXY-R PEPTIDES High-Strength Oxyresveratrol Brightening Peptide Serum." Text states: We split our formula across 2 click-activated bottles to ensure optimum potency for longer.
A HOW TO LAYER diagram illustrates skincare routines. The AM routine includes Tone (Medik8 Press & Glow), Target (Medik8 Oxy-R Peptides), Vitamin C (Medik8 C-Tetra Luxe), and Sunscreen (Medik8 Advanced Day Total Protect). The PM routine involves Cleanse (Medik8 Lipid-Balance Cleansing Oil), Target (Medik8 Oxy-R Peptides), Vitamin A (Medik8 Crystal Retinal), and Moisturiser (Medik8 Advanced Night Restore).
A white product carton for Medik8 Oxy-R Peptides stands next to two small white bottles of the serum. One bottle has a black dropper, the other a black cap.
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Hyperpigmentation

Oxy-R Peptides™

  • Even
  • |
  • Hydrate
  • |
  • Brighten
High-Strength Oxyresveratrol Brightening Peptide Serum
Full Size (2 x 10ml)
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  • Firm
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  • Smooth
 Award-winning Age-Defying Vitamin A Night Serum
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Sustainability

Provenance provides confidence for sustainability claims; helping to prevent 'green-washing' and empowering conscious consumers to purchase in line with their values. Provenance 'Proof Points' are all third party verified and evidenced through supply chains.

Product proof points

The Vegan Trademark

Oxy R Peptides is Vegan Society certified — free from animal ingredients. No animals used in the product's manufacturing or testing. Free from GMOs. Reviewed by the Vegan Society.

Partly Recyclable Packaging

Recyclable Parts: Bottle (glass), Cap (HDPE) and Container (cardboard) Non-Recyclable Parts: Pipette

Brand proof points

B Corporation

Medik8 is a certified B Corporation, scoring over 80 out of 200 across Governance, Workers, Community, Environment and Customers. The certification includes a legal commitment to consider all stakeholders in decision-making. Verified every three years.

SBTi Approved Targets

Medik8 has SBTi approved science-based targets to reduce greenhouse gas emissions in line with limiting global warming to 1.5°C or well-below 2°C. Progress is reported publicly every year, with targets validated by the certifier and reviewed every 5 years.

Living Wage Employer

Medik8 is a Living Wage Employer — all staff are paid a wage calculated to meet the cost of living in the UK. Company wages are updated annually after new rates are announced by the Living Wage Foundation.

Donates to Charity

In 2022 Medik8 donated £10,000 to the National Society for the Prevention of Cruelty to Children

Carbon Measured

The footprint was calculated using GHG Protocol methodology; GWP 100.

Renewable Energy

Medik8's Innovation Centre uses electricity from 100% renewable sources.

Made in Britain

Medik8 carries the Made in Britain trademark — manufactured in the United Kingdom. Subject to facility verification and annual renewal.

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Key Benefits
Professional Strength Power on Dark Spots (1% oxyresveratrol)

Clinically proven to deliver profound yet gentle visible action on dark spots, discolouration and uneven skin tone.

Effective Until The Last Drop

The formula is suspended in a unique preservation serum and split across 2 click-activated bottles to ensure optimal stability and power from activation until the final drop.

Proven Efficacy On All Skin Tones

Proven to be effective on all skin tones, including deeper skin tones where visible dark spots can be a more prevalent concern.**

Hydration Booster

This hydrating serum absorbs instantly and boasts a silky, non-greasy finish.

Proven Results
BEFORE
AFTER
BEFORE
AFTER
7 days to visibly brighter more even skin*
1 month to visible dark spot reduction*
96% agree skin is left feeling smooth*
92% agree Oxy-R Peptides is gentle on skin*
*Proven via an Independent consumer study conducted over 4 weeks on 50 participants / with dark spots skin concerns. **Proven via independent clinical & consumer studies on Oxy-R Peptides conducted on all skin tones (33% of our panels were FP 5-6 skin types). | Please Note: Product packaging shown may be different to the product received due to regional variations.
How to Use

First-time use

If you're new to Oxy-R Peptides, we recommend a patch test at least 24 hours before first use. Learn how to patch test here.

Before Application

Oxy-R Peptides is provided in 2x10mL bottles. Each bottle will stay potent for 6 weeks after opening. Activate the second bottle after finishing the first bottle. Store both bottles at room temperature and away from windows after activation.

Step 1

To activate for first use, press down firmly on the bottle lid until it clicks and shake for 30 seconds. Recycle the lid and replace with the dropper.

Step 2

After cleansing in the morning and evening, blend 6 drops of Oxy-R Peptides across the face, neck and décolletage - avoiding the eye area. Leave to absorb before applying your moisturiser.

Uses per bottle

60
Guide to Layering
Step 1: Cleanse
Medik8 Micellar Mousse pump bottle displayed on a white background with a smear of white foam behind it, highlighting the product's texture.
Morning
Evening
Micellar Mousse™
Full Size (150ml)
Step 2: Tone
Medik8 Press & Glow tonic bottle stands against a clean white background with translucent liquid droplets and a puddle, highlighting its watery texture. Text identifies the product as a 200mL
Morning
Evening
Press & Glow®
Select a Size
Step 3: Target
Two small white bottles of Oxy-R Peptides serum are displayed. A black dropper tool lies nearby, and two drops of yellow serum are visible on the white surface
Morning
Evening
Oxy-R Peptides™
Full Size (2 x 10ml)
Step 4: Brighten
Medik8 C-Tetra Advanced bottle displayed on a clean white background with translucent serum droplets, highlighting its lightweight gel-serum texture.
Morning
C-Tetra® Advanced
Full Size (30ml)
Step 5: Moisturise
Medik8 Advanced Night Restore cream jar shown open with a rich dollop of white cream peaked on top against a clean white background, highlighting its smooth, restorative texture. Black text on the jar reads
Evening
Advanced Night Restore™
Select a Size
Key Ingredients
1% Oxyresveratrol (Oxy-R)

Naturally derived from the mulberry family, oxyresveratrol (pronounced 'ox-ee-ress-vera-trol') is one of the most powerful skin-brightening agents available in skincare. It helps to block the action of tyrosinase (the key enzyme responsible for forming pigment in the skin) to transform the look of dull, uneven skin tones.

Tetrapeptide-30

An illuminating peptide that helps to minimise the production of tyrosinase, to block the overproduction of melanin that leads to visible dark spots.

Acetyl Glycyl Beta-Alanine

A brightening peptide solution that works to help block the transport of melanin to the skin cell, where the overproduction of pigment becomes visible on the skin.

Hyaluronic Acid

With the ability to attract and retain more than 1,000 times its own weight in water, hyaluronic acid draws moisture into the upper layers of the skin; leaving the complexion hydrated and visibly supple.

Acetyl Glycyl Beta-Alanine

A brightening peptide solution that works to help block the transport of melanin to the skin cell, where the overproduction of pigment becomes visible on the skin.

Hyaluronic Acid

With the ability to attract and retain more than 1,000 times its own weight in water, hyaluronic acid draws moisture into the upper layers of the skin; leaving the complexion hydrated and visibly supple.

Full List of Ingredients
Oxy-R Peptides™
High-Strength Oxyresveratrol Brightening Peptide Serum

Aqua (Water), Butylene Glycol, Artocarpus Lakoocha Wood Extract, Hydroxyresveratrol, Gluconolactone, Acetyl Glycyl Beta-Alanine, Glycerin, Lactic Acid, Sodium Hyaluronate, Sodium Benzoate, Disodium EDTA, Tetrapeptide-30, Xanthan Gum, Sodium Metabisulfite, Calcium Gluconate.

*Although we try our best to ensure this list of ingredients is accurate there may be product upgrades from time to time, or slight variants between different regions based on local laws, meaning the only definitive ingredient list is that which is printed on the product packaging.
  • Clinically proven formula
  • Dermatologically tested
  • Fragrance free
  • No synthetic colours
  • Paraben free
Experts Recommended

"Unmatched in strength and visible results."

DANIEL ISAACS
Chief Product Officer
A circular headshot portrait of a man with light brown hair and green eyes, smiling neutrally. He is wearing a white lab coat with 'Medik8' embroidered on the pocket and a black button-up shirt. The background is white.

"Twice the power of similar products!"

MEGAN SCHALTEGGER
Lifestyle & Commerce Writer - Instyle

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Medik8 Niacinamide Peptides serum bottle with a white pump top, resting on a white surface with a smear of white serum behind it.
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Suitable for

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Emulsion-based serum

Benefits
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Engineered To

Visibly clarify and refine the look of pores while smoothing congested skin texture

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Two small white bottles of Oxy-R Peptides serum are displayed. A black dropper tool lies nearby, and two drops of yellow serum are visible on the white surface
Morning
Evening
Oxy-R Peptides™
Full Size (2 x 10ml) | £65
Suitable for

All skin types

Texture

Water-based serum

Benefits
  • Even
  • Hydrate
  • Brighten
Engineered To

Deliver professional strength brightening and visibly even skin tone while targeting dark spots and discolouration

Key Ingredients
  • 1% Oxyresveratrol (Oxy-R)
  • Tetrapeptide-30
  • Acetyl Glycyl Beta-Alanine
  • Hyaluronic Acid
A purple glass dropper bottle of Bakuchiol Peptides serum, with its dropper removed. A swirl of the serum is shown, emphasising the product's texture.
Morning
Evening
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Full Size (30ml) | £55
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Texture

Water-based serum

Benefits
  • Calm
  • Even
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Engineered To

Smooth visible fine lines while improving overall skin tone and texture

Key Ingredients
  • Bakuchiol (1.25%)
  • Brightening Peptide Precursors
  • Centella Asiatica
  • ​Inka Omega Oil

Complete Your Regime

Reviews

Frequently Asked Questions

Can I use Oxy-R Peptides if I'm pregnant or breastfeeding?
As a cosmetics company, we are unable to provide product advice in relation to medical conditions such as pregnancy. We would recommend discussing the ingredients with your GP or midwife before use.
When and how should I apply Oxy-R Peptides?
After cleansing in the morning and evening, blend 6 drops of Oxy-R Peptides across the face, neck and décolletage - avoiding the eye area. Leave to absorb before applying your moisturiser.
Can I use Oxy-R Peptides alongside vitamin C and vitamin A products?
Absolutely. Oxy-R Peptides is ideal for boosting the visible results of vitamin C and vitamin A - as per our pioneering CSA Philosophy. In the morning, apply Oxy-R Peptides after cleansing but before your vitamin C formula (e.g. C-Tetra Luxe). In the evening, apply Oxy-R Peptides after cleansing but before your vitamin A (e.g. Crystal Retinal).
Is Oxy-R Peptides suitable for sensitive skin?
Yes. Oxy-R Peptides has been tested on all skin types including sensitive skin. During our in-depth consumer study, 92% agreed Oxy-R Peptides was gentle on their skin.* *Proven via an independent consumer study conducted over 4 weeks on 50 participants.
Oxy-R Peptides™
Full Size (2 x 10ml)
Full Size (2 x 10ml)