THE HOPPI PURITY STANDARD

We care what
touches their skin.

Every material has a purpose.

Independent skin and chemical testing helps us understand what touches your baby’s skin—and share the findings with you.

6

layers, each with its own job

0

wood pulp in the absorbent core

8

chemical groups not detected*

671

PFAS screened in Pure Pant*

Each figure describes a different measure. *Results apply to tested samples and stated detection or reporting limits.

Inside Pure Diaper

You should know
what’s inside.

Six layers, each with its own job. Tap a layer to find it.

Chemical screening · Pure Diaper & Pure Pant

We check for
what shouldn’t be there.*

What our tests didn’t detect, across eight chemical groups.

PFAS
Phthalates
Parabens
Formaldehyde
Heavy metals
Fragrance substances
Chlorine
Azo-related amines

Test scope & methods

PFAS · Listed PFAS in each product’s report

Phthalates · DBP, BBP and DEHP

Parabens · Listed paraben entries

Formaldehyde · Tested surface layer

Heavy metals · Lead, cadmium, mercury and arsenic

Fragrance substances · Selected substances in the reports

Chlorine · Chlorine-content testing

Azo-related amines · Listed aromatic amines

*Below the stated detection or reporting limits in the tested samples. Results are product- and material-specific. The chlorine result is a content test, not verification of a bleaching process.

Independent testing

We had it
independently tested.

Pure Pant

Dermatest Sensitive Skin Seal

Pure Diaper & Pure Pant. Excellent skin tolerability under the study conditions.

Open document ↗

Chemical screening

Natural latex testing

Skin patch tests

Flushability tested

EWG VERIFIED®

Side by side

Here’s what we check.

Care in every layer.
Clarity in every result.

Explore the product reports ↗

		Other premium diapers
Chemical screening	Per-product SGS reports	Varies
PFAS screening	671-substance panel*	Varies
Parabens & heavy metals	Not detected*	Varies
Chlorine content	Not detected*	Varies
Skin tolerability	Dermatest Seal	Varies
Published reports	Summaries + sources	Varies

*In the tested samples, below the stated limits. The 671-substance panel is for Pure Pant. The chlorine result is a content test, not verification of a bleaching process. Other brands’ testing and disclosures vary.

Read the reports

You can check the results, too.

A plain-language summary for each product, with the source documents.

Pure Diaper

Dermatest Sensitive Skin Seal
SGS chemical screening
Not made with natural latex

Download summary PDF

Pure Diaper

Sensitive-skin testing. Chemical screening. Material identification.

Tape-style diaper • Source reports identify NB/S/M/L and NB/2/3/4.

01 / Skin compatibility

The Dermatest reports describe a patch test on 30 adults with sensitive skin and a one-week in-use test with 10 participants in the diaper area. They report excellent tolerability and no relevant skin reactions under the study conditions. The Sensitive Skin Seal is authorized for the named product.

02 / What was tested

What was tested	Reported finding
PFAS panel	All listed test results were not detected. Detection limits are generally 1 mg/kg; perfluamine is 10 mg/kg.
Lead, cadmium, mercury and arsenic	Not detected. Limits: 2 mg/kg for lead, cadmium and mercury; 10 mg/kg for arsenic.
Phthalates	DBP, BBP and DEHP: not detected; detection limit 50 mg/kg each.
Parabens	Listed paraben entries: not detected. The report includes salts and acid-equivalent entries; limits vary.
Formaldehyde	Not detected in the tested surface layer; detection limit 16 mg/kg.
Fragrance substances	Listed fragrance substances: not detected; stated detection limit 10 mg/kg.
Acrylamide	Not detected at a reporting/detection limit of 0.050%.
Azo-dye-related aromatic amines	Listed amines: not detected after direct reduction and colorant extraction; reporting limit 5 mg/kg.
Dioxins and furans	All 17 listed congeners were below their individual reporting thresholds.
Chlorine	Not detected; detection limit 50 mg/kg. This is a content test result.
Fluorescence	Reported as “not detected” using the stated UV-VIS method.

Materials & additional testing

What was tested	Reported finding
Natural latex identification	SGS concluded that the submitted sample was not made with natural latex.
Intracutaneous biological reactivity	Met the selected USP <88> test requirements. Animal test using material extracts; performed by KingRock through SGS.
Systemic injection biological reactivity	Met the selected USP <88> test requirements. Animal test using material extracts; performed by KingRock through SGS.
Selected US product safety checks	Passed the applicable/requested physical and mechanical, flammability, tracking-label and substrate-lead checks in the cited report. Some clauses were not applicable.

What these results mean. “Not detected” means below the test method’s detection or reporting limit, rather than an absolute zero. Paraben and formaldehyde results refer to the tested surface layer. Results from specific samples or materials do not establish identical results for every layer or production batch. Individual skin responses can vary.

Source reports & study details

Skin compatibility
Dermatest ST-ET-2025-00049 / ST-SENS-2025-00018, Tape V06 (US) / V05 (SG); 5 Feb 2026; pp. 4–5, 15–16, 18.
Chemical panel
SGS SHCPCH26004455-01_EN (US) / -03_EN (SG); 26 May 2026; pp. 2–35.
Chlorine
SGS SHCPCH26004455-04_EN (US) / -02_EN (SG); 25 May 2026; p. 2.
Dioxins/furans
SGS SHCPCH26004455-05_EN (US) / -06_EN (SG); 1 Jun 2026; pp. 2–3.
Azo-related amines
SGS SL52615312851801TX (US) / SL52615312853301TX (SG); 29 May 2026; p. 3.
Natural latex
SGS SHMR260501139601 (US) / SHMR260501138501-1 (SG); 26 May 2026; p. 3.
Biological reactivity
SGS files 14S26002577-01-E / 14S26002577-E; KingRock 26TE-N0025-01-01CV1 / -02CV1; March 2026; PDF pp. 4, 13 / pp. 4, 14.
US checks
SGS SZHL260501998101TY; 22 May 2026. The Hoppi Inc. CPC covers Tape sizes NB, 2–4.

An editorial summary of the supplied reports. Results apply to the submitted samples and specified test conditions.

Download summary PDF · Shop Pure Diaper

Pure Pant

Dermatest Sensitive Skin Seal
671-substance PFAS panel
Not made with natural latex

Download summary PDF

Pure Pant

Sensitive-skin testing. A 671-substance PFAS panel. Material identification.

Pull-on diaper • Source reports identify M/L/XL/XXL and sizes 3/4/5/6.

01 / Skin compatibility

The Dermatest reports describe a patch test on 30 adults with sensitive skin and a one-week in-use test with 10 participants in the diaper area. They report excellent tolerability and no relevant skin reactions under the study conditions. The Sensitive Skin Seal is authorized for the named product.

02 / What was tested

What was tested	Reported finding
671-substance PFAS panel	The report identifies a 671-substance panel, including listed salts/derivatives. All listed test results were not detected; limits vary by analyte.
Lead, cadmium, mercury and arsenic	Not detected in the tested surface layer. Limits: 2 mg/kg for lead, cadmium and mercury; 10 mg/kg for arsenic.
Phthalates	DBP, BBP and DEHP: not detected; detection limit 50 mg/kg each.
Parabens	Listed paraben entries: not detected. The report includes salts and acid-equivalent entries; limits vary.
Formaldehyde	Not detected in the tested surface layer; detection limit 16 mg/kg.
Fragrance substances	Listed fragrance substances: not detected; stated detection limit 10 mg/kg.
Acrylamide	Not detected at a reporting/detection limit of 0.050%.
Azo-dye-related aromatic amines	Listed amines: not detected after direct reduction and colorant extraction; reporting limit 5 mg/kg.
Dioxins and furans	All 17 listed congeners were below their individual reporting thresholds.
Chlorine	Not detected; detection limit 50 mg/kg. This is a content test result.
Transferable fluorescent substance	Reported as “not detected” using the stated UV-VIS method.

Materials & additional testing

What was tested	Reported finding
Natural latex identification	SGS concluded that the submitted sample was not made with natural latex.
Intracutaneous biological reactivity	Met the selected USP <88> test requirements. Animal test using material extracts; performed by KingRock through SGS.
Systemic injection biological reactivity	Met the selected USP <88> test requirements. Animal test using material extracts; performed by KingRock through SGS.
Selected US product safety checks	Passed the applicable/requested physical and mechanical, flammability, tracking-label and substrate-lead checks in the cited report. Some clauses were not applicable.

What these results mean. “Not detected” means below the test method’s detection or reporting limit, rather than an absolute zero. The metals and formaldehyde results refer to the tested surface layer. The 671 panel includes grouped salts and derivatives; it does not mean 671 separate direct measurements. PFAS limits differ from the Tape report. Individual skin responses can vary.

Source reports & study details

Skin compatibility
Dermatest ST-ET-2025-00049 / ST-SENS-2025-00018, Pants V04 (US) / V03 (SG); 5 Feb 2026; pp. 4–5, 15–16, 18.
Chemical panel
SGS SHCPCH26000767-04_EN (US) / -06_EN (SG); 29 May 2026; pp. 2–37. Includes azo-related amines, dioxins and furans.
Chlorine
SGS SHCPCH26000767-05_EN (SG); 29 May 2026; p. 2. Separate chlorine-content report.
Natural latex
SGS SHMR260100183101 (US), 13 Feb 2026 / SHMR260200335501 (SG), 6 Feb 2026; pp. 3–4.
Biological reactivity
SGS files 14S26002577-01-E / 14S26002577-E; KingRock 26TE-N0025-01-01CV1 / -02CV1; March 2026; PDF pp. 4, 13 / pp. 4, 14.
US checks
SGS SZHL260501998501TY; 23 May 2026. The Hoppi Inc. CPC covers Pant sizes 3–6.

An editorial summary of the supplied reports. Results apply to the submitted samples and specified test conditions.

Download summary PDF · Shop Pure Pant

SilkyFlush

EWG VERIFIED®
Dermatologist-supervised patch tests
725-substance PFAS panel
IWSFG-compliant flushability

Download summary PDF

SilkyFlush

Dermatologist-supervised patch testing. PFAS screening. Flushability testing.

Flushable wipe • PFAS report identifies 56-piece and 18-piece packs.

01 / Skin compatibility

Two separate adult patch studies assessed skin irritation under dermatological supervision. The sensitive-skin study had 31 completers aged 23–59; the normal-skin study had 32 completers aged 24–58. No reactions were reported at the scheduled assessments under the test conditions.

02 / What was tested

What was tested	Reported finding
Sensitive-skin patch test	31 adults completed a 24-hour occlusive forearm patch test. No reactions were reported at 0.5, 24 and 48 hours after patch removal.
Normal-skin patch test	32 adults completed a 24-hour occlusive forearm patch test. No reactions were reported at 0.5, 24 and 48 hours after patch removal.
725-substance PFAS panel	Passed. All tested PFAS in the report’s list were not detected below the stated method limits. The panel includes listed salts and derivatives.

03 / Flushability

SGS-IPS reports that the submitted SilkyFlush sample passed all five required tests and can be labeled flushable per IWSFG PAS1:2020.

What was tested	Reported finding
Toilet and drain-line clearance	PASS • INDA/EDANA GD4 FG501.
Disintegration in water	PASS • IWSFG PAS3:2020. After 30 minutes of controlled agitation, 100% passed the 25 mm sieve.
Settling	PASS • FG504. Average settling velocity 2.63 cm/sec; 100% remained settled after 24 hours.
Anaerobic biodisintegration	PASS • FG506A. Reported 100% biodisintegration under the specified 28-day sludge-incubation and 1 mm sieve method.
Fiber analysis	PASS in the flushability summary • TAPPI/ANSI T 401. Identified softwood pulp, hardwood pulp, rayon and lyocell.

Follow the instructions on the pack and local disposal guidance. Laboratory results do not guarantee performance in every plumbing system.

What these results mean. “Not detected” means below the test method’s detection or reporting limit, rather than an absolute zero. The skin studies were adult irritation patch tests, not infant-use studies or repeated-insult sensitization tests. Laboratory disintegration results do not mean immediate or complete biodegradation after flushing. Individual skin responses can vary.

Source reports & study details

Sensitive-skin patch test
SGS QDCPCH26000082-01_EN; 6 Feb 2026; study 26–29 Jan 2026; pp. 2–5.
Normal-skin patch test
SGS GZCPCH26000510-01_EN; 9 Feb 2026; study Jan–Feb 2026; pp. 2–6.
PFAS
SGS CANCPCH26015356603 (US) / CANCPCH26015356604 (SG); 17 Jun 2026; summary p. 2, list pp. 3–31, method notes pp. 31–33.
Flushability and fibers
SGS-IPS 02021-25; 23 Dec 2025; pass summary p. 2, disintegration pp. 7–8, settling pp. 11–12, biodisintegration pp. 13–14, fiber analysis pp. 15–16.

An editorial summary of the supplied reports. Results apply to the submitted samples and specified test conditions.

Download summary PDF · Shop SilkyFlush

FAQs

Let’s clear a few things up.

What does “not detected” mean?

It means the laboratory did not detect the substance at or above the method’s detection or reporting limit. It doesn’t mean an absolute zero. Different substances and methods have different limits, which are explained in each product’s summary.

Is every Hoppi product tested in the same way?

Each product has its own set of reports. Pure Diaper and Pure Pant have skin-tolerability studies, chemical screening and material identification. SilkyFlush has adult skin patch tests, PFAS screening and flushability testing. Open a product summary to see its specific findings.

What do the skin studies tell me?

The Pure Diaper and Pure Pant Dermatest reports describe excellent tolerability under the study conditions. SilkyFlush’s adult patch studies reported no reactions at the scheduled assessments. These findings are specific to those studies; individual skin responses can vary.

What makes SilkyFlush flushable?

The submitted SilkyFlush sample passed all five requirements listed in the SGS-IPS report for IWSFG PAS1:2020: toilet and drain-line clearance, disintegration, settling, anaerobic biodisintegration and fiber analysis. Always follow the pack instructions and local disposal guidance.

Where can I find the full testing details?

Each product has an on-page testing summary and a downloadable PDF with the reported findings, test scope and source-report references. These summaries bring the reports together in plain language.

We care what
touches their skin.

Every material has a purpose.

You should know
what’s inside.

We check for
what shouldn’t be there.*