Rated 4.7 (13,700)
OSBY StellarSpark Topcoat
The ultra-fine shimmer topcoat that transforms any mascara into a luminous, eye-catching finish.
Instant Shimmer In 1 Swipe
Light-Reflective Micro-Crystals
No Flaking or Irritation
Works on Lashes & Brows
Watch Out For Cheap Replicas.
Only OSBY uses micro-crystal shimmer, clean gel technology, and a non-flaking formula.
No chunky glitter, no irritation, no fallout — just refined, luxury sparkle that elevates ANY lash look.
Will this actually show up on MY lashes?
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Yes — StellarSpark uses high-reflection micro-crystals designed to show up even on dark, thick lashes. One swipe = subtle shine. Two–three swipes = full glam shimmer.
What if it irritates my eyes?
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The formula is ophthalmologist-tested, fragrance-free, and uses ultra-smooth shimmer (not scratchy glitter). Safe for sensitive eyes and contact lens wearers.
How long does it take to see the full effect?
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Instantly. It’s a topcoat, so the shimmer payoff appears the second you apply it.
What happens if I stop using it?
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Nothing — it’s purely cosmetic. Your lashes just go back to looking… normal.
(Which is why most customers keep one in their purse for daily touch-ups.)
See it in action
Over 4.4M Views On Instagram
Lauren J.
“Instant glow-up. One swipe and my lids looked lifted, glossy, and expensive.”
Powered by Sex. Loved for Results.
Discover what makes this shimmer topcoat outperform every drugstore glitter mascara on the market.
Powered by Sex. Loved for Results.
Discover what makes this shimmer topcoat outperform every drugstore glitter mascara on the market.
Ultra-Fine Micro-Crystal Shimmer
Creates a refined, luminous glow without chunky glitter. Designed to catch light from every angle.
Clean, Non-Flaking Gel Base
Lightweight, smooth glide formula that locks shimmer in place — no fallout, no smudging.
One-Swipe Precision Brush
Perfect distribution, no clumps. Layer for subtle to dramatic shimmer in seconds.
Safe for Extensions & Sensitive Eyes
Ophthalmologist-tested. Won’t tug, irritate, or dull extensions.
What Real Women Are Saying About Osby
Real experiences from real customers who love our products and service.
My lashes have NEVER looked this pretty.
I added this over my regular mascara and instantly looked more awake and glam. The shimmer is so fine — not cheap or chunky at all. My boyfriend even noticed. Zero flakes after 10 hours.
Perfect holiday and going-out topcoat.
I’ve tried every drugstore glitter mascara and they always flake. This one doesn’t. It makes my lashes sparkle without looking tacky. I get compliments every night I wear it.
Subtle or glam — it does BOTH.
One coat gives a soft twinkle. Three coats look like actual diamonds on my lashes. I use gold for warm looks and silver for nights out. Obsessed.