✦ Nail glossary
Keratin, Explained
Quick definition
The protein building block of the nail plate — layers of it, packed like plywood.
Nails are stacked keratin cells; hydration keeps the layers bonded while dehydration lets them separate into peels and splits.
This is why oiling (flexibility) beats hardeners (rigidity) for most nail problems — flexible keratin survives daily impacts intact.
Related terms
FAQs
What does "Keratin" mean in nails?
The protein building block of the nail plate — layers of it, packed like plywood.
Is keratin 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 keratin last?
Expect 2–3 weeks from gel systems, 5–7 days from regular polish, and 1–2 weeks from quality press-ons.