SET THEORY · A new collection is coming Meet the edit →

Set Theory campaign: burgundy nails, gold jewelry and a black leather jacket

BEAUTY IS A SETTING

Change your set.
Change the
whole look.

A nail wardrobe for every version of you.

Shop all sets →
Buy one, get one freeMix your stylesAutomatically applied
Set Theory packaging design concept in cream, black and burgundy

MORE SETS. MORE LOOKS. MORE YOU.

Build your
first rotation.

Your everyday favorite. Something for later.

All nail sets. Every eligible pair. No code.
Shipping and taxes calculated at checkout.

Packaging design concept · Current packaging may differ.

YOUR EVERYDAY OFFER

Buy one. Get one free.

Pick your first set. Choose your free set.
We’ll add both to your bag.

No code. Every order.

Your nail rotation

Total with BOGOChoose your sets

Lowest-priced eligible sets are free. Nails only; accessories excluded. Shipping and taxes extra. Cannot combine with other discounts.

FOR EVERY VERSION OF YOU

Your outfit changes.
Why wouldn’t your nails?

Soft nude daytime manicure inspiration9 AM · Everyday mood
Burgundy evening manicure inspiration9 PM · After hours

MAKE ROOM FOR BOTH

One everyday.
One unexpected.

Choose two nail sets you love. Keep your favorite in the rotation, and try a different finish with your free set.

  • Mix any eligible nail styles
  • One free set with every pair
  • No code or subscription
Choose your pairing →
Your styles. Your pairing.Mix any eligible nail sets.
One for you. One free.BOGO applies to every pair.
Keep it simple.No code. One-time purchase.

FIND YOUR FAVORITES

Looks for every mood.

Your next detail. Your choice of finish.

Explore each product for current options, availability and included items.

THE SET THEORY COMMUNITY

Your sets. Your stories.

Customer reviews

Every set has a story. Yours could be the first.

Customer reviews will appear here as they arrive.Share your experience ↗

THE SET THEORY MOOD BOARD

More than a look.
A whole mood.

Explore our nail sets ↗
Editorial inspiration: nails, coffee, gold jewelry and evening looks

Campaign imagery and packaging concepts. See each product page for the actual design and included items.

BEFORE THE FIRST SET

A good set starts here.

Ask us a question ↗
Aquamarine SetTHE DETAILS MAKE THE LOOK.
01 / FIT

Start with your shape.

Find your shape, then check the measurements for your chosen set.

02 / THE KIT

Know what’s inside.

Check the included-items list before adding adhesive or tools.

03 / YOUR ROUTINE

Follow the instructions.

Follow the application and removal directions supplied with your set and adhesive.

A FEW GOOD QUESTIONS

The details, answered.

How many nails are in a set?

Check the individual product page. A 24- or 30-piece set refers to individual nails, not complete manicures.

Does every set include adhesive?

Kit contents vary. Only items explicitly listed on the product page are included.

How do I check the fit?

Piece count alone does not guarantee a fit. If dimensions are not listed for a style, ask us about that set before ordering.

Will the color look exactly like the pictures?

Reflective finishes change with the lighting and angle. Screens can also affect how colors appear.

Is this a subscription?

No. Purchases are one-time orders.

How does buy one, get one free work?

Choose any two press-on nail sets and add both to your bag. One is free automatically. Choose four and two are free. The lowest-priced eligible sets are discounted. Nails only; accessories are excluded. No code or expiry. Shipping and taxes are extra. Choose your sets.

Can I combine offers?

BOGO cannot be combined with another discount. If you have a welcome code, you can use it as an alternative on an eligible order.

Can I order a style marked coming soon?

Not yet. If a style or option is unavailable, it cannot be added to your bag. Join the email list for collection news.

Where can I get help with an order?

Contact us with your order number and the email you used at checkout. Include the style and color if your question is about a particular set.

SET THEORY

More looks.
More you.

THE INSIDE SET / YOUR INVITATION

A LITTLE WELCOME TREAT

A little welcome.
10% off.

Join our email list for new edits and a welcome code. Use it as an alternative to BOGO.

One use per customer. No minimum spend. Cannot combine with other discounts. Shipping and taxes are additional where applicable.

Privacy policy ↗

New styles. Nail inspiration. Your choice to stay in the loop.