Skip it Skincare Early read

The Marmite Serum: Love It or Break Out

A £5 serum that's either your holy grail or your worst breakout — and nobody can predict which until it's on your face.

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By Glow · your honest beauty editor
· Published Recently · 30 real voices · 9 videos
The Ordinary Niacinamide 10% + Zinc 1%
Product still · The Ordinary Niacinamide 10% + Zinc 1%

What real owners actually say

Right, let's talk about the most divisive serum in existence. The user comments read like a breakup — half the people are writing love letters and the other half are filing restraining orders. Here's the honest picture: for oily, acne-prone skin, this stuff gets genuine holy-grail worship. People report visibly less oil, calmed redness around the nose and chin, faded pigmentation and scarring, and fewer breakouts. One person even swears by it for body acne — shoulders and bum, specifically, which is the kind of tip you only get from real humans, not marketing. BUT — and this is a big, cystic, red but — a huge chunk of users report it caused horrific breakouts. We're not talking purging here; multiple people clarify that niacinamide doesn't cause purging, so those bumps are the formulation itself breaking you out. Blackheads, whiteheads, cystic flare-ups — and for some, the damage lingered months after stopping. Several users switched to Good Molecules' niacinamide and had zero issues, which suggests The Ordinary's specific vehicle or formulation is the culprit, not the ingredient. One person even claims The Ordinary deleted their negative comment on Instagram, which... if true, is not a great look. The consensus for dry skin seems to be gentler — one dry-skinned user had no irritation — but if you're acne-prone on the drier side, you're in a grey zone. The takeaway from users: patch test for the love of all that is holy, and if you break out, don't assume it'll get better — switch formulations.

What Glow loved

  • Genuinely effective oil control for oily skin types
  • Helps fade pigmentation, scarring, and redness for the lucky ones
  • Absurdly affordable — low financial risk to try
  • Can work on body acne (shoulders, back)
  • Some rosacea sufferers report calming effect

What Glow didn't

  • Causes breakouts for a significant portion of users — not purging, formulation issue
  • Foaming/pilling texture on application feels cheap and annoying
  • Persistent marks or flare-ups reported months after stopping
  • Wildly unpredictable — no way to know if you're a winner or loser until it's on your face
  • Brand allegedly deletes negative feedback instead of addressing it

The YouTube reviewers who actually tried it

The YouTube landscape mirrors the user comments perfectly — this product splits rooms. Dr Ingky's video is literally titled 'Avoid This Popular Serum!' and racked up nearly 5 million views, presumably because half the audience clicked thinking 'I KNEW IT' and the other half clicked thinking 'HOW DARE YOU.' The comment section on that video tells the real story: oily-skinned viewers report glowing, compliment-worthy skin, while sensitive-skinned folks say it irritated them badly. One mum says it cleared her son's face but gave her a brighter complexion — same household, opposite outcomes. SSaba Mushtaque's review for oily and bumpy skin draws comments about a foaming or peeling texture on application, which multiple users across other videos also mention — the serum seems to foam up or pill when rubbed, which is annoying and not something any brand would advertise. Several viewers report zero visible effect after 6-7 months of daily use, which is a long time to wait for nothing. On the positive side, rosacea sufferers in SkinZone's comments say it helped calm their flare-ups, and people pairing it with alpha arbutin for dark spots seem optimistic. A recurring theme across the Indian and Southeast Asian YouTube channels: authenticity anxiety. Many commenters worry about receiving fake products from third-party sellers, which could explain wildly different experiences. Dr Somji's video promised 'how to use' but apparently delivered zero application instruction — viewers were openly annoyed at the clickbait. Oh, and someone asked if it'll remove their freckles, which is the sweetest concern I've read all day.

I TESTED THE ORDINARY NIACINAMIDE AND ZINC SERUM FOR MY ACNE SCARS ONE MONTH|| Shocked by this..
@Sonia Anastasia · 7,885,032 views · 126,000 subs
Glow's pick
✦ Where the stories disagree

The caveats nobody puts on the bottle

When user voice and video reviewers contradict each other, that's usually where the truth lives. Here's the disagreement.

  • USER and VIDEO layers are perfectly aligned on the love/hate split: oily skin tends to love it, sensitive/acne-prone skin tends to break out — this isn't a debate, it's a pattern.
  • USER comments specifically blame The Ordinary's FORMULATION (not niacinamide itself), citing Good Molecules as a clean alternative — VIDEO comments don't address this, suggesting the formulation critique may be an insider insight most reviewers miss.
  • Multiple USER and VIDEO comments report a foaming/pilling texture on application that no brand would ever acknowledge — this is a genuine product experience issue flying under the radar.
  • USER comments allege The Ordinary deletes negative Instagram feedback, while VIDEO creators with millions of views title their videos 'Avoid This Serum' — the negative signal is loud and public, making any brand suppression attempt futile.
  • VIDEO comments across Indian and Southeast Asian channels repeatedly raise authenticity/fake product concerns, meaning some reported bad experiences may stem from counterfeit purchases rather than the genuine product.
  • No BRAND or INTERNET aggregate data was available, meaning there's no official claim to compare against user reality — the brand's silence in this dataset leaves users as the sole voice of truth.
✦ Watched & read

The 9 videos that informed this verdict

Top YouTube reviews ranked by views. Tap a card to watch on YouTube — no autoplay, no creep tracking, no “you might also like.”