Analysis
HTS 3306.20.00 covers yarn used to clean between the teeth (dental floss) under heading 3306 (preparations for oral or dental hygiene, including denture fixative pastes and powders…).
There is no general-rate duty on this line, which puts it with roughly 63% of the 41 tariff lines in chapter 33 that are also free. Free here means free of the base duty only: origin-specific Chapter 99 duties such as Section 301 can still be owed.
The other lines in the same group are 3306.10.00 (preparations for oral or dental hygiene, including denture…, duty-free) and 3306.90.00 (preparations for oral or dental hygiene, including denture…, duty-free).
Census statistics map these goods to NAICS 325620 (Toilet Preparation Manufacturing), an industry of 1,096 US establishments employing 48,968 people, the industry a domestic producer of these goods reports under.
All 2 neighbouring lines carry the same duty-free rate, so a borderline choice between them changes the statistics reported, not the duty paid.
Every edition we compared, from Jan 2023 to Oct 2026 (Rev. 22), shows the same general rate of Free.
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 3306.10.00 | Preparations for oral or dental hygiene, including denture fixative pastes and powders; yarn used to clean between the teeth (dental floss), in individual retail packages: dentifrices | Free |
| 3306.90.00 | Preparations for oral or dental hygiene, including denture fixative pastes and powders; yarn used to clean between the teeth (dental floss), in individual retail packages: other | Free |