Oral care

Expanding Black Dental Floss — Mint Eucalyptus, 80 Yards, Stain-Absorbing

Expanding Black Dental Floss — Mint Eucalyptus, 80 Yards, Stain-Absorbing

Product description

Expands on contact: The floss is designed to start narrow and then expand when it meets saliva, increasing contact with tooth surfaces and interdental spaces to remove plaque where a brush can’t reach.

Black woven filament: The strand is black and woven, so particles and stains picked up during flossing are clearly visible as you go, giving immediate feedback on cleanliness.

Stain-absorbing formula: The fiber is formulated to help absorb surface stains from coffee, wine and other pigmented foods. A thin xylitol coating adds an extra layer of cavity protection and a mild minty sensation.

Materials and size: Each spool contains 80 yards of floss made from woven fibers with a xylitol finish. The floss is vegan and cruelty-free, without parabens, BPA, or PFAS.

Refillable, recycled case: The lightweight case is made from about 95% recycled plastic and is refillable to reduce single-use waste. Replacement floss bobbins can be swapped into the casing when a spool runs low.

How to use: Pull a comfortable length, guide the thin strand between teeth, then lower tension once positioned so the thread can expand and contact more surface area. Dispose of used floss and replace bobbins when finished.

Pros

  • Expands to contact more tooth surface for better plaque removal
  • Black color makes debris and stains easy to see
  • Xylitol coating and stain-absorbing fibers help fight cavities and lift discoloration

Cons

  • Thicker feel can be challenging in very tight spaces
  • May catch or stick in crowded teeth
  • Higher-cost perception compared with basic thin floss

VerdictThis expanding black floss delivers a deeper clean than thin white strings. It expands to reach more surface area, helps lift stains like coffee and wine, and its dark color makes debris easy to spot. The xylitol coating adds a cavity-fighting boost. It’s refillable and made with recyclable materials, though its thicker feel can be tricky in very tight contacts.

Reviews

  1. Robbie 5/5

    Perfect for tight contacts

    My teeth are very close together so I need floss that can adapt. This one stretches to insert, then relaxes to expand and trap tiny particles. Leaves a pleasant minty sensation. Won’t be changing brands.

  2. Allison 5/5

    Won’t switch to anything else

    I didn’t expect to love floss this much, but the expanding action actually cleans better than thin string. It’s comfortable, doesn’t irritate my gums, and my hygienist noticed a real improvement. Five stars from me.

  3. LyndaT 5/5

    Solid, reliable floss

    Feels sturdy and is easy to hold. Reaches awkward spots and cleans effectively with a nice scent.

  4. hunter 5/5

    Saved my gums after a scare

    After a close call with periodontal issues I went all-in on better flossing. I tried several expanding types and came back to this one. Slightly textured and all-black so you can see results, with a mild minty note — I’m hooked.

  5. Yokourt 4/5

    Leaves a noticeably clean mouth

    Much better than ultra-thin white floss. The darker, slightly thicker thread shows what it pulls out. I keep one in the car for snack-filled days — gives quick confidence before meetings or travel.

  6. Lisa Chiara 5/5

    Switched from my old brand permanently

    Stronger and thicker than what I used before, it doesn’t shear or fray and the expanding action cleans well. My crowded teeth sometimes make it catch, but I prefer that over a flimsy string that fails to remove debris.

  7. Catherine Williams 5/5

    Gentle with receding gums

    This is the only floss I use now. With receding gums most floss hurts, but this slides without cutting and still clears beneath the gum line. The black color makes debris obvious, it doesn’t shred or get stuck, and there’s a light mint taste. A spool lasts me weeks and I keep a spare in my purse.

  8. Anna S 5/5

    Thorough clean that I can feel

    This floss has a secure grip and doesn’t slip between my fingers. It expands with saliva, contacting more of the tooth surface than thin floss, and the dark fiber confirms it’s working. A dab of toothpaste on the strand can make the clean feel even deeper.

  9. Know-it-all 5/5

    Shocking — and oddly satisfying

    I’ve become obsessed with flossing because the black thread reveals everything it pulls out. It’s thicker than many options and really excavates debris — gross but very satisfying. I actually look forward to flossing now.

  10. Aleena 4/5

    Fresh feeling

    Leaves my mouth feeling fresh.

  11. Catalin 5/5

    Good, with minor caveats

    I’d buy this again. It isn’t perfect for every tight gap, but it cleans effectively and seems free of harsh chemicals.

  12. Sarah 5/5

    Finally found expanding floss

    Works great. My partner is picky about floss and it was hard to find expanding options locally — this does the job well.

Comments

No comments yet.

Sign in or sign up to comment.

  1. Made By Dentists PRO-X UV Toothbrush Sanitizer Clip — Portable UV-C Toothbrush Case
    Oral care

    Made By Dentists PRO-X UV Toothbrush Sanitizer Clip — Portable UV-C Toothbrush Case

    4.8 6 reviews A compact clip-on toothbrush sanitizer that uses a 5-minute UV-C cycle to sterilize brush heads, charges by USB-C and runs about 30 days per charge. Clips to most manual and electric heads and doubles as a travel cover to keep bristles protected in bags and shared bathrooms.
  2. Perio Silicone Nozzles — Electric Water Flosser Replacement (2-Pack)
    Oral care

    Perio Silicone Nozzles — Electric Water Flosser Replacement (2-Pack)

    4.0 4 reviews Soft-tipped Perio nozzles designed for gentle gum care and precise cleaning. The pair features silicone tips that reach deep pockets and rotate for better access, making them suitable for sensitive gums, braces, implants, crowns and bridges.
  3. 32.8-inch Wide LED Clamp Desk Lamp for Home Office
    Computers

    32.8-inch Wide LED Clamp Desk Lamp for Home Office

    3.8 6 reviews A dual-head, clamp-mounted LED desk lamp with extendable arms that reach 32.8 inches and deliver broad desk coverage. Stepless dimming (10–100%) and adjustable color temperature (3000K–5700K) let you tune from warm to cool light. Includes a wireless 2.4 GHz remote with roughly 60 ft range, memory an
  4. Rust-Resistant Metal Shower Curtain Hooks — Decorative Curtain Rings
    Bath

    Rust-Resistant Metal Shower Curtain Hooks — Decorative Curtain Rings

    5.0 1 reviews Durable nickel-plated stainless steel curtain rings with a rustproof, eco-friendly finish. Each movable hook measures 2.7 x 1.5 in (6.8 x 3.8 cm), holds up to 10 lb, locks securely and slides on a rod without tools. Sold as a generous multi-pack for bathroom or outdoor use.
  5. Organic Turmeric Powder (5 lb) — High-Curcumin Turmeric Supplement
    Indian kitchen

    Organic Turmeric Powder (5 lb) — High-Curcumin Turmeric Supplement

    4.4 8 reviews Bulk organic turmeric powder made from Curcuma longa root, offered in a 5-pound bag. Marketed as a supplement-grade powder rich in naturally occurring curcuminoids, non-GMO and free from common allergens. Intended for daily wellness blends, drinks, and simple culinary uses where color and bright fla
  6. 6.3-Inch Extra-Wide Lint Roller for Pet Hair — 500 Sheets, 4 Refills
    Cleaning

    6.3-Inch Extra-Wide Lint Roller for Pet Hair — 500 Sheets, 4 Refills

    4.9 8 reviews Oversized lint roller designed for pet households: a 6.3-inch wide adhesive roller with 500 total sheets, four replacement rolls and a protective dust cover. Wider head covers bigger areas fast while the sticky sheets lift hair, lint, crumbs and dust from upholstery, clothing and carpets. Durable pl
  7. Ergonomic Book Stand with LED Light, 360° Swivel & Page Clips
    Office

    Ergonomic Book Stand with LED Light, 360° Swivel & Page Clips

    4.9 13 reviews A versatile wooden book stand with built-in three-mode LED lighting, a storage tray, spring-loaded page clips and full 360° horizontal rotation plus 0–180° tilt. Designed to hold textbooks, tablets and cookbooks securely with anti-slip clamps and a weighted base. Folds slim for compact storage and c
  8. 120-Piece Iron-On Flower Patch Set — Assorted Embroidered Appliqués
    Sewing

    120-Piece Iron-On Flower Patch Set — Assorted Embroidered Appliqués

    4.5 6 reviews A 120-piece assortment of embroidered cotton appliqués: flowers, butterflies and hearts in varied sizes and bright hues. Each patch has a hot-melt adhesive backing (leave the protective plastic in place during ironing). They can be ironed on or stitched for extra strength. Includes multiple design s
  9. HEM Myrrh Incense Cones — 12 Packs (120 Cones), Natural Scent
    Home fragrance

    HEM Myrrh Incense Cones — 12 Packs (120 Cones), Natural Scent

    5.0 12 reviews Handcrafted myrrh cones made from herbs, resins and essential oils. This set includes 12 packs (120 cones total) that deliver a long-lasting, clarifying aroma for meditation, yoga, prayer or everyday relaxation.
  10. Hutsuls 3x9" Leather Paddle Strop for Knife Sharpening
    Shaving

    Hutsuls 3x9" Leather Paddle Strop for Knife Sharpening

    4.9 13 reviews A 3" x 9" double-sided leather paddle strop mounted on solid ashwood for honing and polishing blades. Includes an ergonomic handle, a step-by-step guide, and a green stropping compound for restoring keen, smooth edges on knives, axes, chisels and planes.