Is disperse blue 1 safe on a child's skin?

Under the app's default Cautious lens, disperse blue 1 on a child's skin rates Swap: the app would put this near the top of your swap plan. 2 sourced concerns count (suspected carcinogen, consensus tier; irritant · allergen, consensus tier). This is research with sources, not medical advice.

Is disperse blue 1 safe in clothing worn next to skin?

Under the app's default Cautious lens, disperse blue 1 in clothing worn next to skin rates Swap: the app would put this near the top of your swap plan. 2 sourced concerns count (suspected carcinogen, consensus tier; irritant · allergen, consensus tier). This is research with sources, not medical advice.

What do the Clean, Low, Watch and Swap levels mean?

They are cut from a continuous concern level the app computes from the sourced claims that the chosen evidence lens shows: each claim counts its concern class, tier weight, confidence and dose relevance, combined worst-first with a decay so one serious finding outweighs many small ones, then scaled by how much of the substance reaches you in this use. Clean is below 0.35, Low below 1.1, Watch below 2.0 and Swap above that, on a 0 to 3 scale.

Is Disperse Blue 1 safe on skin (left on)?

Q: Is disperse blue 1 safe on skin (left on)?

Under the app's default Cautious lens, disperse blue 1 on skin (left on) rates Swap: the app would put this near the top of your swap plan. 3 sourced concerns count (suspected carcinogen, consensus tier; restricted, consensus tier; irritant · allergen, consensus tier). This is research with sources, not medical advice.

Materials & packaging3 uses researched7 sourced claims

Where it turns up: textile dye, blue pigment. Detox My Life researched disperse blue 1 under 3 different uses, because the same substance means something different in each. Every claim below carries its evidence tier, how sure the research is that it applies here, and the sources it cites. The level is computed by the app's own deterministic engine, so the page says exactly what the app would.

Level by use and lens

Use	Mainstream	Cautious (default)	Based	Concerns · favour · fringe
On skin, left on	Swap	Swap	Swap	3 · 0
On a child's skin	Swap	Swap	Swap	2 · 0
Worn next to skin	Swap	Swap	Swap	2 · 0

Mainstream shows consensus claims only; Cautious adds emerging research; Based adds fringe claims, labelled as such. The last column counts, under Cautious, the sourced concerns, the findings in its favour and the fringe claims Based would add.

Safer swaps: the app's swap catalog covers the products this turns up in: Stain-resistant treated fabric. Alternatives are always types, never brands.

On skin, left on Swap

Under the default Cautious lens disperse blue 1 on skin (left on) rates Swap: the app would put this near the top of your swap plan. Mainstream (consensus only) rates it Swap; Based (adds the fringe) rates it Swap. Researched 2026-09-03.

Sourced concerns (3)

ConsensusSuspected carcinogenconfidence 100%

Disperse Blue 1 is classified as possibly carcinogenic to humans (Group 2B) by the International Agency for Research on Cancer (IARC) and is reasonably anticipated to be a human carcinogen by the National Toxicology Program (NTP).

Why here: Dermal exposure is a potential route for humans, especially through its historical use in semi-permanent hair color formulations at concentrations less than 1%, which are leave-on products.
What would have to be true: Dermal contact with consumer products containing Disperse Blue 1, such as hair dyes.

Sources the engine cites:

Disperse Blue 1 - Some Flame Retardants and Textile Chemicals, and Exposures in the Textile Manufacturing Industry — nih.gov · regulator or public body
Disperse Blue 1 - 15th Report on Carcinogens — nih.gov (2005) · regulator or public body
Disperse Blue 1 | C14H12N4O2 | CID 17190 — nih.gov · regulator or public body

ConsensusRestrictedconfidence 100%

Disperse Blue 1 is restricted in textiles to a maximum concentration of 50 mg/kg under REACH Regulation (EC) No. 1907/2006 Annex XVII entry 72, and the German Food and Feed Code (LFGB) restricts it to less than 75 mg/kg for each dye in consumer goods.

Why here: These restrictions are in place due to health concerns, including allergic reactions and carcinogenicity, arising from dermal exposure to disperse dyes in consumer products, which can include leave-on applications or prolonged skin contact.
What would have to be true: Dermal contact with consumer products, particularly textiles, containing Disperse Blue 1.

Sources the engine cites (no regulator, review or study among them):

1 web article (satra.com), linked in the app.

ConsensusIrritant · allergenconfidence 100%

Disperse Blue 1 causes skin irritation and may cause an allergic skin reaction.

Why here: Direct and prolonged dermal contact with products containing Disperse Blue 1, such as leave-on hair dyes or textiles, can lead to allergic contact dermatitis.
What would have to be true: Dermal contact with consumer products, such as textiles or hair dyes, containing Disperse Blue 1. Symptoms may appear within hours or days of contact and can include an itchy rash, swelling, and blistering.

Sources the engine cites:

Textile dye allergy — dermnetnz.org · review
1 web article (satra.com), linked in the app.

On a child's skin Swap

Under the default Cautious lens disperse blue 1 on a child's skin rates Swap: the app would put this near the top of your swap plan. Mainstream (consensus only) rates it Swap; Based (adds the fringe) rates it Swap. Researched 2026-09-03.

Sourced concerns (2)

ConsensusSuspected carcinogenconfidence 100%

Disperse Blue 1 is classified as possibly carcinogenic to humans (IARC Group 2B) and is reasonably anticipated to be a human carcinogen by the National Toxicology Program, based on sufficient evidence from animal studies where oral exposure caused tumors.

Why here: While animal studies primarily involved oral exposure, the European REACH regulation restricts Disperse Blue 1 in textiles that come into direct contact with human skin due to its carcinogenic potential, indicating a dermal exposure concern.
What would have to be true: Dermal contact with textiles containing Disperse Blue 1 at concentrations equal to or greater than 50 mg/kg (0.005% by weight).

Sources the engine cites:

Disperse Blue 1 - 15th Report on Carcinogens — nih.gov (2021) · regulator or public body
Disperse Blue 1 | C14H12N4O2 | CID 17190 — nih.gov (1992) · regulator or public body
Disperse Blue 1 (IARC Summary & Evaluation, Volume 48, 1990) — inchem.org (1990) · regulator or public body
2 web articles (earpcorp.com, satra.com), linked in the app.

ConsensusIrritant · allergenconfidence 100%

Disperse Blue 1 can cause allergic contact dermatitis and skin sensitization upon direct dermal contact.

Why here: Disperse dyes, including Disperse Blue 1, are used in synthetic textiles and can migrate from fabrics to the skin, especially with friction and perspiration, leading to allergic reactions.
What would have to be true: Dermal contact with textiles containing Disperse Blue 1 at concentrations equal to or greater than 50 mg/kg (0.005% by weight).

Sources the engine cites:

Sensitization to Disperse Blue Dye 124 in Triveneto Region from 1997 to 2021 and Its Potential Occupational Role — nih.gov (2025) · regulator or public body
Contact allergy from disperse dyes in textiles–a review — ovid.com (2013) · review
1 community or commercial page, not counted here.

Worn next to skin Swap

Under the default Cautious lens disperse blue 1 in clothing worn next to skin rates Swap: the app would put this near the top of your swap plan. Mainstream (consensus only) rates it Swap; Based (adds the fringe) rates it Swap. Researched 2026-09-03.

Sourced concerns (2)

ConsensusSuspected carcinogenconfidence 100%

Why here: Although the primary animal studies for carcinogenicity involved oral exposure, dermal contact is a potential route of human exposure, as Disperse Blue 1 is used in textile dyes for fabrics worn next to the skin.
What would have to be true: Dermal exposure from textiles dyed with Disperse Blue 1.

Sources the engine cites:

Disperse Blue 1 - 15th Report on Carcinogens — nih.gov (2009) · regulator or public body
Disperse Blue 1 | C14H12N4O2 | CID 17190 — nih.gov (2009) · regulator or public body
Disperse Blue 1 - Some Flame Retardants and Textile Chemicals, and Exposures in the Textile Manufacturing Industry — nih.gov (1990) · regulator or public body

ConsensusIrritant · allergenconfidence 100%

Disperse Blue 1 is restricted in textile articles intended to come into direct contact with human skin by REACH Annex XVII Entry 72 due to its potential to cause allergic reactions and skin sensitisation.

Why here: Disperse Blue 1 is a textile dye used in synthetic fabrics, and unbound dyes can leach from clothing onto the skin, especially with perspiration, leading to allergic contact dermatitis.
What would have to be true: Direct and prolonged skin contact with textile articles dyed with Disperse Blue 1 at concentrations equal to or greater than 50 mg/kg (0.005% by weight).

Sources the engine cites:

Which disperse dyes are prohibited in textiles under REACH regulation? — earpcorp.com (2025) · regulator or public body
Textile dye allergy — dermnetnz.org · review
1 web article (wikipedia.org), linked in the app.
1 community or commercial page, not counted here.

Not researched here

The engine has no dossier for disperse blue 1 when cooked with heat, in cold food, as a finishing ingredient, in heated food packaging or other uses. The app researches an ingredient for the use it infers from your product, so a scan fills these in; this page only shows what has already been researched and source-verified.

This is research, not medical advice. Detox My Life shows sourced claims sorted by evidence tier. It does not diagnose, treat, or tell you to start or stop anything. Talk to a qualified professional about your health.

Scan your own. The app reads any product label with your camera, works out how you are about to use it, and researches every ingredient for that use with live sources. Every scan adds to a Detox Score for your home, where 50 is a typical home in your region, and a plan of next swaps.

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