Find Your Perfect Fit!

Find the shape you love, confirm your size with a sizing kit, and enjoy a flawless fit every time.

Or grab an Intro Bundle!

How to Use Your Press-On Nail Sizing Kit (Step-by-Step)

What You’ll Need

  • Your BYN sizing kit (includes sample press-ons in all sizes and a cuticle pusher)
  • A pen
  • The size record card included in your kit
  • Good lighting (natural light is ideal!)

Step 1: Push Back Your Cuticles

Using the cuticle pusher included in your kit, gently push back your cuticles. This creates a clean, open nail bed and ensures the press-ons sit flush — not overlapping your skin.

Step 2: Size One Nail at a Time

Pick up one of the press-on samples from the kit and place it over your natural nail. Start with your thumbs and work your way across each hand.

Make sure the press-on sits comfortably side to side, covering the full width of your nail bed without overlapping your skin

It should feel flush but not tight.

✧ You should be able to gently tuck or glide the bottom edge just under or along your cuticle line — this helps give a seamless, natural look when your final set is applied.

If It’s Too Small:
  • The sides of your nail will be exposed
  • The tip may feel tight or pinch
  • You may not be able to line it up properly with your cuticle
 If It’s Too Big:
  • It will press into your sidewalls or overlap your skin
  • It may feel bulky or pop off prematurely

Step 3: Write Down Your Sizes

Once you find the perfect fit for each nail, write that size down on the size record card provided.

Do this for both hands — sometimes they’re slightly different, and that’s totally normal.

Your sizing should look something like this:

Left Hand: 1 – 5 – 4 – 6 – 8

Right Hand: 1 – 5 – 4 – 6 – 9

When You’re Done

Once you’ve recorded your sizes, you can:

  • Send us your sizes through the order form when you shop
  • Enter your sizes when choosing a predesigned set
  • Or DM/email us a photo of your size card (if you’re unsure, we’ll double-check!)

Still Have Questions?

We’re always here to help. If you’re unsure about a fit or want a second opinion, just reach out! You deserve a set that feels as good as it looks.