FAQ Page

How long does a floss head last?

ONE WEEK! (3-5 DAYS FOR THOSE WITH TIGHTER TEETH)

Replace floss heads weekly! Those with tight teeth might need to replace floss heads every 3-5 days. Use our "Roll & Sweep" technique to get the longest use out of your floss heads!

Slate floss heads are reusable (like your toothbrush!) just rinse & dry after each use, and change out weekly.

Those with tight teeth might need to change them more frequently.

Those that floss more casually might not need to change them as much!

How long will a box of refills last?

20 WEEKS! (4 to 5 months)

If you have tighter teeth, you might want to order every 3 months.

What is your floss made of?

We use woven floss with 450 strands. It is not coated and doesn’t contain any chemicals. It is ultra-high molecular weight polyethylene, and it is teflon-free.

TOXIN FREE! No PTFEs, PFAS, wax, or chemicals!

Nano-hydroxyapatite - what is it?

Ethically sourced from 5% nano, nHa is a natural mineral that has remineralizing effects on enamel. We use this as a natural substitute to fluoride! It helps combat the negative effects of demineralization.

What are the differences in the colored floss heads?

The Classic Grey, Pink, Green, and Lilac floss heads do not have any flavors, are not coated and don’t contain any chemicals.

The Ice Blue thin floss is specifically designed for individuals with tight contacts between their teeth. The thinner design helps it glide more easily into those tight spaces.

The Ortho Royal Blue is designed specifically for those with Braces.


The Nano-Hydroxyapatite light blue classic floss head has all natural nano-hydroxyapatite to help restore your teeth’s enamel.

All floss heads are ultra-high molecular weight polyethylene, and they are teflon-free.

What are the LTO Thin Floss Heads?

The Ice Blue thin floss is specifically designed for individuals with tight contacts between their teeth. The thinner design (400 strands) helps it glide more easily into those tight spaces.

Is it safe to use on crowns?

Yes! Here's a great blog post about why using the Slate Electric Flosser is perfect for crowns and veneers:
READ BLOG

Is it waterproof?

YES! Both Slate Electric Flossers can be used in the shower.

The new rechargeable flosser has an IPX7 rating! This scale ranges from 0 (no protection) to 8 for the highest level of protection. An IPX7 rating ensures that the device can be submerged in water up to 1 meter for 30 minutes without any damage.

Can you use with a lingual bar (permanent retainer)?

The Slate Electric Flosser cannot work with a permanent retainer at this time. You can still use it on your molars, where most cavities form!

How does the braces head work?

The slim arms on the floss head go between the wire and the tooth.

HOW TO FLOSS WITH BRACES
Can you use the Slate Electric Flosser with a bridge?

The Slate Electric Flosser, at this time, cannot work with a bridge. However, stay tuned, as this is in the works! 

How to connect a new floss head:

To connect a new floss head, slide the top of the flosser neck up through middle of the floss head and press firmly on the back of the tongue scraper until it snaps in on both sides (make sure the interacting logos on the flosser and the floss head are both pointing upward).

HOW TO USE VIDEO
How to remove your floss head?

To remove a floss head, place your thumb on the back of the neck just below the tongue scraper and press down firmly on a hard surface until it pops off.

How do I file a Warranty Claim?

If you are having any trouble with your Flosser, you can file a Warranty Claim using this link: https://slateflosser.com/apps/redo/returns-portal/login

You can also reach out to our customer support team so they can troubleshoot with you and make sure you have a working Flosser!

Is Shipping Free?

We offer free shipping on all floss head subscriptions and orders over $49.99 in the United States.

International orders will have to pay shipping, duties and fees.

SHIPPING POLICY
What is your return policy?

30-day money back guarantee!

Slate offers a 30-day return policy on your initial order, which means you have 30 days after receiving your item to request a return. To be eligible for a return, you will need the receipt with the order number or proof of purchase.

To start a return, you can fill out a request using this link: https://slateflosser.com/apps/redo/returns-portal/login.

If your return is accepted, we’ll send you a return shipping label and instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

Opened Floss Head refills are not eligible for a return.

REFUND POLICY
Can I use HSA/FSA to purchase Slate?

We are HSA/FSA approved, but you need a Letter of Medical Necessity (LMN) form from a provider to qualify. You can also get a LMN from Sika Health directly on the Slate product page!

Redo Package protection must not be selected for your purchase to be verified.

Subscriptions are not eligible for HSA/FSA purhcases through Sika Health.

Contact Us

Have more questions? Contact us, we would be happy to help you!