Medik8 Oxy-R Peptides high-strength brightening peptide serum with two dropper bottles.

Medik8 Oxy-R Peptides serum with dropper and two bottles on white background.

Medik8 Oxy-R Peptides product image showcasing professional strength action on dark spots and skin hydration.

Medik8 Oxy-R Peptides duo pack with click-activated bottles for optimum potency and profound brightening.

Medik8 Oxy-R Peptides

Name: Medik8 Oxy-R Peptides
Brand: Medik8
Price: 55.00 GBP
Availability: InStock
Rating: 5.00 (1 reviews)

£55.00

Tax included.

Size: 2 x 10ml

2 x 10ml

✓ 1% Oxyresveratrol - Professional Strength | ✓ Visibly Brighter, More Even Skin in 7 Days | ✓ Click-Activated for Potency to the Last Drop

Medik8 Oxy-R Peptides is Medik8's professional-strength brightening serum: 1% oxyresveratrol, a concentration the brand says was previously unattainable and is exclusive to Medik8, paired with two illuminating peptides and hyaluronic acid. Shown to visibly brighten dark spots and discolouration in 7 days, it is the dark spot serum for uneven tone and post-blemish marks on every skin tone.

Oxyresveratrol, naturally derived from the mulberry family, is described by Medik8 as one of the most powerful brightening agents in skincare: it helps limit the activity of tyrosinase, the enzyme behind visible pigment, to transform the look of dull, uneven tone. Tetrapeptide-30 and acetyl glycyl beta-alanine are brightening peptides that work on the same pathway from two further angles, and hyaluronic acid keeps the skin hydrated and supple. Because oxyresveratrol is fragile, Medik8 suspends it in a preservation serum split across two click-activated bottles, so each stays potent for six weeks after opening. In the brand's independent four-week consumer study on 50 participants with dark spot concerns, skin looked visibly brighter in 7 days, dark spots were visibly reduced in one month, 96% agreed Medik8 Oxy-R Peptides left skin feeling smooth and 92% agreed it was gentle. Its studies included deeper skin tones - a third of panels were Fitzpatrick types 5 and 6.

Visible Results Users Love

Visibly brighter, more even skin in 7 days
Visible dark spot reduction in one month
Faded appearance of post-blemish marks and discolouration
Smooth, hydrated-feeling skin (96% agreed)
Gentle on skin (92% agreed)

Why This Beats a Standard Brightening Serum

1% oxyresveratrol - Medik8 Oxy-R Peptides carries a concentration Medik8 says is available nowhere else
Shown to work on all skin tones, including deeper tones where dark spots are a more common concern
Click-activated twin bottles keep the formula at full strength from first drop to last
Two brightening peptides add to the oxyresveratrol rather than diluting it
Fragrance free, paraben free, dermatologically tested and certified by The Vegan Society

Best For

Dark spots and sun-induced discolouration
Marks left behind after blemishes
Uneven, dull-looking skin tone
Deeper skin tones looking for tested brightening
Boosting vitamin C by day and Crystal Retinal by night

Choose Medik8 Oxy-R Peptides if dark spots and uneven tone are your main concern; for overall ageing, pair it with Crystal Retinal rather than choosing between them.

Becci, an aesthetic nurse with more than two decades in specialist skincare and medical aesthetics, knows dark spots are where clients most often waste money, and they come to her for an honest opinion on what to try first. Medik8 Oxy-R Peptides is her answer because the concentration is real, the stability system is clever and the studies included the deeper skin tones many brightening studies leave out.

Size: 2 x 10ml

FAQS

Is Medik8 Oxy-R Peptides good for dark spots on darker skin tones? +

Yes, and that is unusual. Medik8 ran its clinical and consumer studies on all skin tones, with a third of the panels at Fitzpatrick types 5 and 6, and found it effective across them, which matters because visible dark spots are a more common concern on deeper skin. Skin looked brighter in 7 days and dark spots were visibly reduced in one month.

What is oxyresveratrol and why does 1% matter? +

Oxyresveratrol is a brightening molecule from the mulberry family that helps limit the activity of tyrosinase, the enzyme behind visible pigment. It is potent but unstable, so most brands use a fraction of a percent. Medik8 says 1% was previously unattainable and is available only in Oxy-R Peptides, made possible by its patented click-activated stabilisation.

Why does it come as two bottles, and how do I activate them? +

Oxyresveratrol loses strength once mixed, so Medik8 splits the formula across two 10ml click-activated bottles. Press the lid firmly until it clicks, shake for 30 seconds, then swap the lid for the dropper. Each bottle stays potent for six weeks after activation, so open the second only when the first is finished.

Can I use Medik8 Oxy-R Peptides with vitamin C and Crystal Retinal? +

Absolutely - Medik8 says it is ideal for boosting both, in line with its CSA Philosophy. In the morning apply Oxy-R Peptides after cleansing and before your vitamin C (such as C-Tetra Luxe); in the evening apply it before Crystal Retinal.

How long until I see results? +

In Medik8's four-week consumer study on 50 participants with dark spot concerns, skin looked visibly brighter and more even in 7 days, with visible dark spot reduction at one month. Daily sunscreen protects that progress.

Is Oxy-R Peptides suitable for sensitive skin? +

Yes. Medik8 tested it on all skin types including sensitive skin, and 92% of study participants agreed it was gentle. It is fragrance free and contains no vitamin A or strong exfoliating acid - patch test first as with any new active.

Does it work on marks left after blemishes? +

Yes - Medik8 lists post-imperfection marks alongside dark spots and discolouration as the concerns it targets. Apply it across the whole face rather than dotting it on individual marks, so tone evens out overall.

How long does a pack last, and how should I store it? +

Medik8 counts around 60 uses across the two bottles at 6 drops per application. Keep both at room temperature and away from windows once activated, and finish each bottle within six weeks of opening it.

Can I use Medik8 Oxy-R Peptides during pregnancy or while breastfeeding? +

It contains no vitamin A, which is the ingredient most people are asked to avoid. Medik8 does not publish formal pregnancy or breastfeeding guidance for this product: as a cosmetics company it says it cannot advise on medical conditions, and it asks customers to discuss the full ingredient list with their midwife or GP before use. Please check with your midwife or GP first.