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Hot glitch alert! The COSLUS C20 Water Dental Flosser — Black Professional Set can drop to just $7.99 before tax with checkout code 1TFSOMN3. A shopper confirmed the code working at checkout on October 12, 2026. The product page may show a higher price before you apply the code.
How to get the $7.99 deal
- Open the COSLUS C20 flosser on Amazon.
- Select Black and Professional Set, then add it to your cart.
- At checkout, enter promo code 1TFSOMN3 and apply it.
- Confirm the item total drops to $7.99 before tax and check any shipping charges before ordering.
The rechargeable, portable set includes a 300 mL water tank and flosser attachments. This is a potential price glitch or unusually deep promo discount; Amazon has not confirmed a pricing error.
Grab the COSLUS flosser deal at Amazon →
Prices, promo eligibility and availability may vary by account and can change at any time. If the code does not apply or the total is higher, the offer may have ended or may not apply to your selected item. Confirm your final checkout total.
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