Methylene Blue for Sensitive Skin: Is It Suitable?
Sensitive skin makes every new active a gamble. Here is how methylene blue tends to behave on reactive skin, what in a formula matters more than the methylene blue itself, and how to introduce it safely.
In short: at cosmetic concentration (well under 0.1%), methylene blue is generally well tolerated and is not known as a common sensitiser. With sensitive skin, the rest of the formula matters more: choose a fragrance-free serum without essential oils, with soothing, barrier-supporting ingredients, and patch test on the inner forearm for 24 hours before using it on your face.
Why the formula matters more than the active
When a methylene blue serum irritates sensitive skin, the cause is often something else in the bottle. The most common culprits in skincare are fragrance, including essential oils such as rosemary, geranium or lavender, and high levels of drying alcohol. Several methylene blue serums on the market contain essential oils. See how the main serums compare.
- Fragrance-free, with no essential oils in the ingredient list.
- A low, deliberate methylene blue level. More is not better; above its effective window methylene blue turns pro-oxidant.
- Soothing, barrier-supporting partners such as ectoin, centella asiatica, allantoin, panthenol and beta-glucan.
- Moderate niacinamide. Around 2 to 5% is well tolerated by most people; very high levels can flush some sensitive skins.
- A full published ingredient list, so you can check it against anything that has irritated you before.
How to introduce it
Patch test for 24 hours
Apply a small amount to the inner forearm and leave it. No redness, itching or swelling means you can move to the face.
Start every other day
Use it in the evening, every other day for the first week, over clean, slightly damp skin.
Change one thing at a time
Don't start a methylene blue serum in the same week as a retinoid or an exfoliating acid. If something reacts, you'll know which product it was.
Build to daily
If your skin is comfortable after a week, move to once or twice daily. Stop if you see persistent redness or stinging.
When to check with someone first
Speak to your GP, pharmacist or dermatologist before using methylene blue skincare if you take serotonergic medication (such as SSRIs, SNRIs or MAOIs), have G6PD deficiency, are pregnant or breastfeeding, or have a diagnosed skin condition such as rosacea or eczema that is currently flaring. The medication caution relates mainly to systemic methylene blue rather than cosmetic use, but it is worth the conversation. Full safety guide.
Frequently asked questions
Is methylene blue good for sensitive skin?
At cosmetic concentration it is generally well tolerated. For sensitive skin, choose a fragrance-free formula with soothing ingredients and patch test first.
Can methylene blue cause irritation?
Any active can irritate some people. Irritation from methylene blue serums more often comes from fragrance or essential oils in the formula. Stop using it if you get persistent redness, stinging or itching.
Can I use methylene blue if I have rosacea?
Check with your GP or dermatologist first, especially during a flare. If you do try it, choose a fragrance-free formula and patch test.
General information about cosmetic ingredients, not medical advice.
Formulated on what the evidence supports
One serum. Nine actives. Methylene blue at cosmetic concentration. Made in London.
Shop the serumThis page is general information about cosmetic ingredients and is not medical advice.