Skintervene Cellular Renewal Serum with Methylene Blue, 40 ml bottle
Skintervene Cellular Renewal Serum with Methylene Blue, 40 ml, in a brushed deep-blue bottle
Skintervene Cellular Renewal Serum bottle and carton, fragrance-free methylene blue face serum made in London
Skintervene methylene blue serum shown against a dark green background

Advanced mitochondrial skincare · Made in London

Cellular Renewal Serum

with Methylene Blue · 40 ml

A lightweight, fragrance-free gel-serum built around methylene blue at cosmetic concentration, with eight supporting actives for hydration, a smoother-looking texture and a more resilient-feeling barrier.

£44.99Was £59.99 Save 25%/ 40 ml · free UK delivery
Choose how to buy
  • Free UK deliveryDispatched in 0–1 working days, 2–3 days in transit
  • Fragrance-freeVegan and cruelty-free
  • Made in LondonBatch-traceable, UK Cosmetics Regulation
  • Nine activesFull INCI published below

New to methylene blue? Read the safety guide and patch test before first use.

Methylene blue · C₁₆H₁₈ClN₃S

The key active

Methylene blue.
Why it's here.

Methylene blue was first synthesised in 1876 and has a long history in science. It is redox-active: it cycles between oxidised and reduced states rather than being used up like a conventional antioxidant, and it can act as an alternative electron carrier in the mitochondria.

Skin's mitochondrial activity declines with age, which is why researchers have become interested in it for skincare. The laboratory work is genuinely promising; large human trials of topical methylene blue don't exist yet, and we say so plainly.

1876First synthesised, with well over a century of study
RedoxCycles between states rather than being consumed
ColourlessAt cosmetic concentration it won't stain skin or fabric

The formula

Nine actives.
One precise purpose.

01Hero

Methylene Blue

Methylene Blue

Redox-active antioxidant that can act as a mitochondrial electron carrier. The reason this formula exists.

02

Niacinamide

Niacinamide

Vitamin B3. Helps minimise the look of pores, balance oil and support the barrier. One of the best-evidenced actives in skincare.

03Rare

Tremella Mushroom

Tremella Fuciformis Sporocarp Extract

Forms a moisture-binding film with hyaluronic-acid-like hydration.

04

Ectoin

Ectoin

Extremolyte that holds water around skin cells, helping skin cope with pollution and environmental stress.

05

N-Acetyl Glucosamine

Acetyl Glucosamine

Supports the skin's own hydration and helps even the look of tone and texture.

06

Centella Asiatica

Centella Asiatica Extract

Soothing botanical used to calm the look of redness and support barrier comfort.

07

Green Tea Extract

Camellia Sinensis Leaf Extract

EGCG polyphenols for antioxidant defence against everyday environmental stressors.

08

Beta-Glucan

Beta-Glucan

Hydrating, soothing polysaccharide that leaves skin feeling comfortable and supple.

09

Squalane + Panthenol

Squalane · Panthenol

Skin-identical emollient and pro-vitamin B5. Softens and locks in moisture without a heavy feel.

How to use

The daily
intervention.

  1. Cleanse

    Start with a gentle cleanser and leave skin slightly damp.

  2. Apply

    Press two to three drops into face and neck. Morning, evening or both.

  3. Moisturise

    Let it absorb for a minute, then follow with your moisturiser.

  4. Protect

    In the morning, finish with a broad-spectrum SPF 30 or above.

Patch test on the inner forearm for 24 hours before first facial use. Full routine guide

Our position on the evidence

Mechanism clear.
Clinically young.

Methylene blue in topical skincare is well characterised in the lab and in reconstructed-skin models. Large, controlled human trials don't exist yet. We'd rather tell you that than sell certainty we can't support.

Every supporting active was chosen for what it's known to do on skin, and the full ingredient list is published below.

Details

Everything
on the label.

Volume
40 ml / 1.35 fl oz
Texture
Lightweight gel-serum
Period after opening
6 months
Skin type
All, including sensitive
Fragrance
Fragrance-free
Vegan · cruelty-free
Yes · Yes
Made in
London, United Kingdom
SKU
SKV-CRS-MB-40

Full INCI

Aqua (Water), Glycerin, Niacinamide, Squalane, Caprylic/Capric Triglyceride, Acetyl Glucosamine, Panthenol, Tremella Fuciformis Sporocarp Extract, Centella Asiatica Extract, Camellia Sinensis Leaf Extract, Beta-Glucan, Ectoin, Allantoin, Arginine, Serine, Glycine, Hydroxyethylcellulose, Cetearyl Alcohol, Cetearyl Glucoside, Xanthan Gum, Sodium Phytate, Methylene Blue, Citric Acid, Phenoxyethanol, Ethylhexylglycerin

Caution

For external use only. Avoid contact with eyes. Discontinue use if irritation occurs. If you take prescription medication, especially antidepressants, read our safety guide and check with your pharmacist first. Store in a cool, dry place away from direct sunlight. Keep out of reach of children.

Questions

Answered with
precision.

What is methylene blue and why is it in a serum?

A synthetic compound first made in 1876. In skincare it acts as a redox-active antioxidant that cycles between oxidised and reduced states and can act as a mitochondrial electron carrier, a different mechanism from conventional antioxidants.

Will it stain my skin blue?

No. At cosmetic concentration it is effectively colourless once in the gel base and won't stain skin, towels or bedding. The serum has a very faint blue-green tint in the bottle that disappears on application.

Is it suitable for sensitive skin?

It's fragrance-free and designed for all skin types, with Ectoin, Centella and Allantoin for comfort. As with any new active, patch test on the inner forearm for 24 hours first.

Can I use it with vitamin C, retinol or acids?

It layers well with niacinamide, peptides and hyaluronic acid. With prescription retinoids or strong exfoliating acids, alternate: use the serum in the morning and the stronger active at night.

When will I notice a difference?

Skin feels more hydrated from the first use. Give texture and tone four to six weeks of consistent daily use, and judge the full effect at around twelve weeks.

How does the subscription work?

Choose subscribe & save and a new bottle is delivered every 6 weeks at 10% off. Skip or cancel any time from your account.

How fast is delivery?

UK delivery is free on every order. Orders placed before 12pm on a working day are dispatched the same day, and usually arrive in two to three working days.