Fans are panicking over the new Active Serum — did IS Clinical fix the sting or kill the magic? Short answer: both.
The old formula felt like a tiny chemical peel every morning. The new one? It’s a whisper instead of a scream. That matters because the sting was the proof it was working for a lot of us.
This is still a potent vitamin C + acid exfoliant hybrid. $138 for 30ml. The brand claimed they “improved tolerance” without sacrificing results. I rolled my eyes.
pH Shift
Dropped from super acidic to something your moisture barrier won’t curse at
Texture Change
Went from watery-slick to a slightly thicker gel — no more running down your wrist
Scent
That metallic tang is gone. Smells like… nothing. Suspiciously nothing.
Photo: Content Pixie / Unsplash
They swapped out some aggressive acids for gentler derivatives. Smart on paper. The hero is still L-ascorbic acid, but they buffered it with tripeptide-1 and a mushroom complex that sounds like a skincare smoothie ingredient.
- L-Ascorbic Acid: Brightens fast but now doesn’t burn
- Tripeptide-1: Collagen signal booster — fancy but proven
- Mushroom Complex: Calms redness so you don’t look like a tomato
- Lactic Acid: Gentle exfoliation without the peeling drama
First pump: it’s thicker, almost like a light moisturizer. Absorbs in about 15 seconds — no tackiness. My face didn’t tingle. I actually missed the tingle for a second.
Week 3: my pores look the same. But my skin is less angry. No flaking around my nose. That never happened with the old version. Unexpected win: I can use it on my neck without it stinging like a paper cut.
My dark spots faded about 70% as fast as the old formula. But my skin stopped rebelling. Trade-off I’ll take.
This isn’t the same serum. It’s the serum for people who couldn’t handle the first one. And honestly? That’s a bigger market.