I put jellyfish on my face every night for a month. Not the stinging kind—the collagen kind.
Retinol makes my skin peel like a sunburned lizard. I needed something that plumps without the purge. Some By Mi claims this serum firms better than retinol. Bold. I had to test it.
It’s a $28 serum that promises “instant firming” and “deep wrinkle improvement.” The claim that hooked me: 86% firmer skin in 4 weeks. That’s specific enough to be suspicious.
Jellyfish Collagen
Not the boring bovine kind. It’s marine-derived, supposedly smaller molecules that sink in deeper.
Peptide Complex
Six types. They’re supposed to tell your skin to make more collagen—like a personal trainer for your face.
Hyaluronic Acid
Low-molecular weight. Fancy words for “gets into layers retinol can’t reach without irritation.”
Photo: ibnu ihza / Unsplash
Four actives doing the heavy lifting. No fragrance, no essential oils—just stuff that works or hydrates. The jellyfish collagen is the star, but the peptides are the backup dancers that actually make it perform.
- Jellyfish Collagen: Marine collagen with smaller peptides for deeper absorption
- Copper Tripeptide-1: Wound healing + collagen synthesis booster
- Acetyl Hexapeptide-8: Argireline copycat—relaxes expression lines like Botox-lite
- Sodium Hyaluronate: Holds 1000x its weight in water, but this version actually penetrates
Photo: Element5 Digital / Unsplash
It comes out like thick water—slippery, almost snotty. Dries down in 12 seconds flat. No sticky residue. My pillowcases survived.
Week two: my laugh lines looked less like canyons. Week three: I got a zit. Not the serum’s fault—I think—but I was mad about it. Unexpected win: it layers perfectly under sunscreen. No pilling, no fighting.
Photo: El S / Unsplash
My skin is visibly plumper—like I drank a gallon of water every day. The fine lines around my eyes softened maybe 30%. The deep nasolabial folds? Still there. This isn’t a facelift in a bottle. But my skin looks bouncy, not deflated.
Photo: Evangeline Sarney / Unsplash
It’s not retinol—but it doesn’t try to be. It’s the gentler, glowier cousin that shows up with snacks and no drama. I’ll keep using it.