Is Kate Somerville EradiKate Sulfur Mask Reformulated Better?

Reformulation Alert
The cult-favorite acne mask that TikTok swore by just got a new ingredient list — and not everyone is thrilled.
Expert Analysis · Honest Reviews · Real Results
1.🧴Wait, They Changed It

So you know that pink sulfur mask everyone and their dermatologist hoarded? Kate Somerville just swapped the formula. And the internet is *not* chill about it.

The old one smelled like a fancy match strike. The new one? Smells like a pool floatie left in the sun. That’s your first clue.

2.🔬The New Math

It’s still a $44 2oz tube of sulfur-zinc mayhem. The claim: “Same results, cleaner ingredients.” I called bullshit. Bought it anyway.

1

Sulfur percentage dropped

Went from 10% to 7.5%. That’s a 25% nerf on the active that actually kills acne.

2

Zinc oxide replaced

Old formula used zinc oxide. New one uses zinc PCA. Sounds minor — it changes the drying sensation completely.

3

Added niacinamide

In theory, calms redness. In practice, makes it feel less like a mask and more like a serum that got lost.

white and gray round plastic container

Photo: Poko Skincare / Unsplash

3.💥Ingredients Don’t Lie

New formula swapped in aloe and niacinamide to offset the lower sulfur. Smart on paper. On my chin? Different story.

  • Sulfur (7.5%): Still the bouncer for bacteria
  • Zinc PCA: Gentler drying than oxide but slower acting
  • Niacinamide 2%: Helps redness but dilutes the sulfur punch
  • Aloe Vera: Makes it spreadable but less ‘crusty’ — which is the whole point
a woman getting a facial mask on her face

Photo: Soheil Kmp / Unsplash

4.📉The Texture Shift

Old mask was a thick clay paste that dried into a chalky shell. New one is thinner — like runny yogurt with sand. It doesn’t crack, it just… sits there.

Week 2: My usual chin cyst took 4 days instead of 2 to flatten. But my dry patches didn’t peel. Trade-off feels real.

💡

One Thing: Shake the tube before squeezing. The sulfur settles like sediment in a riverbed. First two pumps were almost clear liquid — wasted product.
stainless steel spoon on white surface

Photo: Jocelyn Morales / Unsplash

5.🧪Real Talk, Real Skin

Smaller whiteheads? Gone in 8 hours. Deep underground cysts? The old formula was faster. New one is kinder but slower — like a gentle friend who takes forever to get to the point.

Buy if
You have sensitive skin that couldn’t handle the original’s intensity
⏭️

Skip if
You need nuclear-strength spot treatment for cystic acne — get the old version on eBay while it lasts
💰

Worth it?
$44 for a mask that’s now a 6/10 instead of 9/10? Only if you’re new to sulfur.
6.📝My Actual Take

It’s not bad. It’s just not *the* mask anymore. The original was a weapon — this is a tool. Fine for maintenance, weak for emergencies.

6.5/10
Gentler but less effective overall
🛍️

Where to Buy: Sephora still carries it. Buy the travel size ($24) first — don’t commit to the full tube until you know if the new formula works for *your* bacteria.