A French manicure is judged on one thing, and it isn’t the color. It’s the smile line: the curve where the tip meets the nail bed. Get that even across all ten nails and a $9 bottle of sheer pink looks like salon work. Get it wobbly and no top coat will save it.
This is how to paint one at home, including the part most tutorials skip, which is what to do after you’ve painted a bad line.
What you need
Four things do the work. A sheer base color in pink or beige, a white or ivory polish with a brush you can control, a flat clean-up brush, and acetone. Skip the guide stickers. They pull polish off the tip when you peel them and they force the same curve onto every nail regardless of shape.
A striping brush costs about $3 and is easier to steer than the brush that comes in the bottle. If you buy one thing on this list, buy that.
The five steps
Start dry and oil-free. Wipe each nail with acetone on a cotton pad even if you’ve just washed your hands, because hand cream is the usual reason a tip lifts on day two.
1. Base coat. One thin layer, capped along the free edge. 2. Sheer color. Two thin coats of the pink or beige, two minutes apart. 3. The tip. Paint the white in two strokes, starting at one corner and pulling to the middle, then the other corner to meet it. 4. Clean up. Dip the flat brush in acetone and cut the line straight while everything is still soft. 5. Top coat. One layer over everything, capped again.
The fourth step is the real technique. Nobody paints ten identical curves freehand. What separates a good French from a bad one is fixing the line afterwards, when the polish is soft enough to cut cleanly.
Where the line should sit
On short nails, keep the tip thin: about the depth of the free edge itself, no more. Deep tips on short nails make the nail look stubby, which is the opposite of the intent. Scale it up as length increases, so long coffin nails can carry a tip three times deeper without looking heavy.
Shape matters too. On a square nail the line runs almost straight with a soft dip in the middle. On almond and oval nails it follows the curve of the tip more closely. Copying a square smile line onto an almond nail is why some sets look slightly off without anyone being able to say why.
| Nail shape | Tip depth | Line shape |
|---|---|---|
| Short square | 2-3 mm | Nearly straight, slight dip |
| Squoval | 3 mm | Shallow curve |
| Almond | 3-5 mm | Follows the taper |
| Coffin, long | 6-9 mm | Deeper curve, symmetrical |
Modern versions worth trying
The hairline micro French, barely a millimeter deep, is the version that reads current rather than dated. Colored tips work on the same geometry, and a cherry red or lilac tip over a clear base takes no more skill than white. There’s a full set of options in our guide to French nail styles.
Fixing the usual mistakes
The line is wobbly. Don’t repaint. Load the flat brush with acetone and shave the edge straight, working from the middle outwards. The white is streaky. The polish is too thick; two thin coats beat one opaque one. The tips chipped in two days. You didn’t cap the free edge, or hand cream got on the nail before the base coat.
Push cuticles back gently when the skin is soft after a shower, and don’t cut them (American Academy of Dermatology). The neat cuticle line makes the manicure look finished, and cutting it opens a gap that gets infected.
If the manicure survives the first day but not the first week, the problem is wear rather than technique. My post on making a manicure last longer covers that side.
FAQ
How thick should the white tip be?
About as deep as the free edge on short nails, roughly 2 to 3 mm, scaling up to 6 to 9 mm on long coffin nails. Deep tips on short nails make the nail look shorter, which is usually the opposite of what people want.
Do French tip guide stickers work?
They work, but badly. Peeling them off pulls polish away from the tip, and they impose one curve on every nail whatever its shape. A flat brush and acetone give a cleaner line and cost less.
What polish do salons use for the white tip?
Usually a dense white gel or a lacquer with a flat brush, applied in two thin coats rather than one thick one. The opacity comes from layering, not from loading the brush.
Can you do a French manicure on very short nails?
Yes, and it suits them. Keep the tip thin, around 2 mm, and use a sheer base rather than an opaque one so the nail doesn’t look sectioned off.
How long does a painted French manicure last?
Four to six days with regular polish if you cap the free edge and wear gloves for washing up, and two to three weeks in gel. Tip wear is what ends it, which is why the free edge matters more than the rest of the nail.