Start with the conclusion: "organic" and "inorganic" are chemical categories, not safety grades, and "organic" does not mean "natural". Treating them as a ranking of which pigment is safer leads straight to the wrong purchase.
What actually determines whether a PMU pigment can be used, and where, is whether the specific substance and its concentration satisfy the legal limits in your market, and what it breaks down into under UV or laser light. Both of those can be verified. The words "organic" and "inorganic" cannot tell you either.
The first correction: "organic" does not mean natural
In chemistry, an organic compound is simply a carbon-containing compound, typically produced through petrochemical synthesis. It has nothing to do with plant extracts, "natural" sourcing or mildness.
The European Commission's Joint Research Centre (JRC), in its report on the safety of tattoo and permanent make-up inks, states that over 80% of the colorants in use are organic chemicals and more than 60% of them are azo pigments, some of which can release carcinogenic aromatic amines. Most pigments on the market are therefore "organic" in the chemical sense — and simultaneously synthetic. The JRC also notes that the pigments used are not specifically produced for tattoo and permanent make-up applications, and that they generally contain impurities.
So when a pigment is labelled organic, it is telling you about molecular structure, not botanical origin.
What the two categories are, chemically
| Organic pigments | Inorganic pigments | |
|---|---|---|
| Chemical definition | Carbon-containing compounds (common families: azo, phthalocyanine, quinacridone) | Metal oxides or salts |
| Common examples | Azo pigments (mostly reds, yellows, oranges), phthalocyanines (blues, greens) | Iron oxides (reds, browns, blacks), titanium dioxide (white), chromium oxide (green), cobalt salts (blue) |
| Chemical risks recorded by the JRC | Some azo pigments can release carcinogenic aromatic amines under solar, UV or laser exposure | Heavy metals, one of the chemical-risk categories in RAPEX notifications (28% of chemical risks) |
That table lists chemical definitions and the risk categories the JRC report actually records. It is not a safety ranking, and it is not a finding that one class is more stable or more lightfast. The JRC report also makes a point that changes how you read any label: these pigments are not produced specifically for tattooing or PMU, and no risk assessment has been carried out for the exposure route that matters — injection with long-term permanence. The same report found that ink purity averages roughly 70–90%, meaning impurities are normal rather than exceptional.
Why "organic vs inorganic" cannot substitute for a safety check
Because risk comes from specific substances, not category names. Several figures from the JRC report make this concrete:
- Between 2005 and 2015, the EU's RAPEX alert system issued 126 notifications for tattoo and PMU inks. 120 were chemical risks (109 involving tattoo inks, 11 involving PMU inks); six were microbiological.
- Within the chemical risks, primary aromatic amines accounted for 40%, polycyclic aromatic hydrocarbons (PAHs) for 30% — including 10% benzo[a]pyrene — and heavy metals for 28%. The report notes that PAHs can migrate from skin to lymph nodes, and that benzo[a]pyrene is classified by the International Agency for Research on Cancer (IARC) as carcinogenic to humans.
- In market surveillance samples, PAH issues were detected in about 43%, primary aromatic amines in 14%, heavy metals in 9%, preservatives in 6% and microbiological contamination in 11%.
Those problems come from impurities and additives as well as the pigments themselves — and impurity content is not captured by the word "organic" or "inorganic".
Regulation is the verifiable side of this
In the European Union, mixtures for tattooing purposes are restricted by entry 75 of Annex XVII to the REACH Regulation (Commission Regulation (EU) 2020/2081). Three aspects matter in practice:
- Its scope explicitly includes PMU. It covers permanent make-up, cosmetic tattooing, micro-blading and micro-pigmentation — mixtures injected or introduced into a person's skin, mucous membrane or eyeball.
- Limits are set by hazard classification, not by the organic/inorganic label. For example: carcinogenic or germ cell mutagenic substances 0.00005% w/w; toxic to reproduction 0.001% w/w; skin sensitisers 0.001% w/w; skin corrosive or irritant, or serious eye damaging or eye irritant, 0.01% w/w (0.1% where used solely as a pH adjuster).
- It cross-references Annex II (prohibited substances) and Annex IV (permitted colorants and their conditions) of the EU Cosmetics Regulation (EC) No 1223/2009. The European Chemicals Agency (ECHA) publishes the Annex IV colorant list in its CosIng database, and Appendix 13 to Annex XVII sets specific limits for named substances.
One timing detail is easy to miss: Pigment Blue 15:3 (CI 74160) and Pigment Green 7 (CI 74260) are listed in Annex II of the Cosmetics Regulation, and the concentration limits applying to them were deferred to 4 January 2023. Pigment regulation is an ongoing narrowing process, not a single event.
Note the jurisdictional boundary: the above is EU law. The US position is different. The Food and Drug Administration (FDA) states that it has not approved any colour additive for injection into the skin, and that colorants used in tattoos and permanent makeup are unapproved colour additives. Whether a pigment is legal where you work therefore has to be checked against local rules, not carried across borders.
A checklist for assessing a pigment
Stop asking "is it organic or inorganic". Ask these four instead:
- Which specific substance is it? You want a chemical name or a Colour Index (CI) number, not a family name.
- What is the legal limit in your market, and what is the actual concentration? In the EU, check entry 75 of Annex XVII to REACH and Appendix 13; in the US, check the FDA position and any state requirements.
- How are purity and impurities handled? The JRC's 70–90% purity range means impurities need to be declared and tested. Ask for batch test documentation rather than accepting an unverifiable phrase such as "medical grade".
- What does it break down into under UV and laser exposure? The JRC reports that some azo pigments can release carcinogenic aromatic amines under solar, UV or laser irradiation. That affects both long-term use and any later laser removal.
How to use this with a client
When a client asks "is your pigment safe", "our pigments are organic, so they are safer" does not help — organic describes molecular structure, not a safety grade. Three points work better:
- The specific substances and their concentrations must meet local legal limits.
- The substance identity, concentration and batch test documentation can be requested from the supplier and kept on file.
- The JRC reports that some azo pigments can release carcinogenic aromatic amines under UV or laser exposure — one of the facts a client can be told before a procedure.
To compare current pigment colours by application area, see ATTO's PMU pigment range.