✦ Nail glossary
Smile Line, Explained
Quick definition
The curve where the free edge meets the nail plate — also the French tip's guide.
A crisp, symmetrical smile line is the hallmark of clean manicure work. Its depth and curve determine how formal a French reads.
As nails grow, the smile line travels forward — the tell-tale sign it's refill time.
See it in action
Related terms
FAQs
What does "Smile Line" mean in nails?
The curve where the free edge meets the nail plate — also the French tip's guide.
Is smile line hard to do at home?
It depends on your setup: gel-based versions need a lamp and patience; lacquer and press-on routes need neither.
How long does smile line last?
Longevity tracks your prep quality more than the product: dehydrated, capped, sealed sets outlast rushed ones by double.