Peeped the INCI on Ourself Skin Barrier Biome Serum and stopped dead at Phenoxyethanol. That’s the preservative that’s been flagged as a potential synthetic endocrine disruptor — and it’s chilling in the middle of the ingredient list, not at the bottom.
The brand leans hard into “clean science,” but this is the same stuff EU regulators are tightening limits on. Feels like they’re banking on you not reading past the first three oils.
It’s a daily serum, $92 for 30ml. The hook: “biome-friendly” and “clinically proven.” I bought in because I’m a sucker for anything that promises to fix my barrier without fragrance.
Postbiotic Ferment
Smells like faint sourdough — in a good way. No masking perfume.
Squalane Base
Lightest squalane I’ve ever used. Doesn’t sit on top like an oil slick.
Peptide Complex
Claims to plump in 28 days. We’ll see.
Photo: pmv chamara / Unsplash
Hero ingredients are postbiotic lactobacillus ferment and squalane — great for soothing and moisture barrier repair. But the preservative system is Phenoxyethanol (the disruptor) plus Ethylhexylglycerin. No parabens, but this swap isn’t the flex they think it is.
- Phenoxyethanol: Synthetic preservative, potential endocrine disruptor — ironic for a ‘clean’ serum
- Lactobacillus Ferment: Postbiotic that feeds good bacteria, actually solid
- Squalane: Plant-derived, mimics skin’s natural oils, non-comedogenic
- Ethylhexylglycerin: Boosts preservative power, generally safe but can irritate sensitive skin
Photo: yunona uritsky / Unsplash
Texture is watery-gel — disappears in 10 seconds flat. No tackiness. My combo-oily skin didn’t revolt, which is rare for a barrier product.
Week two: my forehead texture smoothed out. But the skin around my nose got tingly — that’s the Phenoxyethanol doing its thing. Not a breakout, just a low-grade “hey, I’m here” irritation.
After 3 weeks: less redness, better moisture retention. But my barrier didn’t transform — it just felt…fine. No glow-up, no disaster. The texture improvement was the only measurable win.
It’s a decent barrier serum hamstrung by a hypocritical ingredient list. If you’re fine with Phenoxyethanol, it works. But don’t call it clean — call it convenient.