Reformulation Alert
Your glow-up just got a glow-up — but did the new formula actually improve it?
Expert Analysis · Honest Reviews · Real Results
1.🧴The Glow-Up Got Glowed
Sleek reformulated their Illuminating Serum and I weirdly feel betrayed — I loved the old one, warts and all. But after three weeks with the new bottle, I’m here to say the upgrade is real, and it’s not just marketing fluff.
The old serum felt like a subtle highlighter you’d forget you were wearing. The new one? It’s a literal light switch — but somehow not greasy. That’s the part I didn’t see coming.
2.🔬What You’re Buying Now
It’s $38 for 1 oz, and the claim is “instant luminosity + 72-hour hydration.” I rolled my eyes at the hydration part — but then my skin didn’t flake under makeup for the first time in months.
1
New Micro-Droplet Technology
Dispersion is finer — no more white-cast sparkle on medium skin tones.
2
Fermented Squalane Base
Absorbs in about 10 seconds flat, no sticky residue on your pillowcase.
3
Recyclable Glass Pump
Actually works — you get every last drop without wrestling the pump.
Photo: Poko Skincare / Unsplash
3.✨Inside the Bottle
The hero move here is swapping silicones for a squalane-plus-niacinamide duo. It feels lighter but performs heavier — like a glass of cold water vs. a milkshake.
- Niacinamide 5%: Calms redness and tightens pores without drying
- Fermented Squalane: Locks in moisture at a molecular level, not just on top
- Ethyl Ascorbic Acid: A stable vitamin C that doesn’t oxidize after three weeks
- Mica (Refined): Gives that lit-from-within glow without glitter fallout
Photo: pmv chamara / Unsplash
4.📝The Feel & The Wait
It’s a watery-gel texture that sinks in before you can even rub it in properly. First impression — “is that it?” Then you catch your reflection in a car window and realize you look like you slept 10 hours after only getting 6.
Week two hit with a purge — tiny whiteheads on my chin. I panicked, but by week three they cleared and my skin looked like I’d been drinking a gallon of water daily. The glow isn’t makeup-level; it’s skin-level.
💡
One Thing: Mix two drops into your foundation instead of applying under it — the glow stays even but looks way more natural.
Photo: Ali Pazani / Unsplash
5.📊Real Talk Results
My pores look smaller — not a skincare miracle, just the niacinamide doing its job. The glow lasted 6 hours on bare skin, not the claimed 24. But my makeup sat better and my redness dropped by about 40%.
✅
Buy if
You’re combo-oily and want glow without grease — or you’re tired of sheer highlighters that vanish by noon.
⏭️
Skip if
You hate any shimmer particles at all — this still has a hint of mica, just refined.
💰
Worth it?
Yes, but wait for Sephora’s 20% off sale. $38 is fair, $30 is a steal.
Photo: Fleur Kaan / Unsplash
6.💡Final Call
The reformulation is better — genuinely better, not just “new.” It’s now the serum I grab when I want to look alive, not just moisturized.
8.2/10
Smarter glow, less grease, real hydration — worth it
🛍️
Where to Buy: Sephora or Sleek’s site directly — grab the travel size first if you’re on the fence, it’s $14 and lasts three weeks.