What "9-Free" Nail Polish Actually Means

Walk the nail aisle and you’ll be counted at: 3-free, 5-free, 7-free, 9-free, 10-free, 21-free. The number keeps climbing, and it looks like a safety rating. It isn’t one. No regulator defines these terms, and no authority audits them, which means the brand picks both the number and the list it refers to.

That doesn’t make the claim meaningless. It makes it something you read rather than something you trust.

Where the numbers came from

The original 3-free was a genuine response to real concerns: formaldehyde, toluene, and dibutyl phthalate, all three flagged over the years for links to irritation, reproductive harm, or their status as known carcinogens. Removing that trio was a substantive change in nail chemistry.

Everything past three is expansion, and it’s honest expansion in most cases. Later additions are things like formaldehyde resin, camphor, xylene, ethyl tosylamide, parabens, and lead, some for allergy reasons rather than headline toxicity. Londontown’s Lakur polish is 9-free on exactly that pattern: no formaldehyde, formaldehyde resin, toluene, dibutyl phthalate, camphor, lead, xylene, paraben, or ethyl tosylamide. Their Kur treatment line goes further and claims 21-plus free.

Where it stops being useful

Two honest limits. First, a high number can include ingredients that were never in the formula to begin with, so the count says more about a brand’s marketing than about how much it reformulated. A brand that never used xylene gets to add it to the list for free.

Second, and worth saying plainly: free-from is not the same as risk-free. Every polish is a solvent-carried film. Ventilation still matters, the smell is still telling you something, and anyone with sensitive skin should patch test a new brand the way they would a new serum.

How to read the claim

Look for the actual list rather than the digit, and check whether the trio that started all this, formaldehyde, toluene, and DBP, is on it. That covers most of the real ground. After that, the number is a preference, not a safety scale.

What’s worth more than a higher count is what a brand adds. Londontown builds conditioning oils into its formulas, which is a claim about the nail rather than about what’s absent from the bottle, and our full manicure shortlist covers where that lands against the alternatives.

Frequently asked

Is 9-free nail polish regulated?

No. There is no regulatory definition or audit behind free-from numbers. The brand chooses the number and the list it refers to, which is why you should read the list rather than compare digits.

What are the original 3-free ingredients?

Formaldehyde, toluene, and dibutyl phthalate. Removing those three was a substantive reformulation, and they remain the most meaningful part of any free-from claim.

Is non-toxic nail polish actually safe?

Safer in specific, listed ways, not risk-free. Every polish is a solvent-carried film, so ventilation still matters and a new brand is worth patch testing if your skin reacts easily.

Is a higher free-from number better?

Not reliably. A high count can include ingredients a brand never used, which costs it nothing to add. Check whether formaldehyde, toluene, and DBP are excluded, then judge the formula on what it adds rather than what it omits.