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 C12-15 Alkyl Benzoate safe on skin (left on)?

Q: Is c12-15 alkyl benzoate safe on skin (left on)?

Under the app's default Cautious lens, c12-15 alkyl benzoate on skin (left on) rates Low: a little concern, nothing the app would ask you to swap. 2 sourced concerns count (irritant · allergen, emerging tier; environmental, emerging tier). 3 findings count in its favour. This is research with sources, not medical advice.

1 use researched5 sourced claims

Detox My Life researched c12-15 alkyl benzoate under one use, because the same substance means something different in each use. 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	Clean	Low	Low	2 · 3

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 has no entry tied to this ingredient yet. When you scan a product that contains it, the app suggests cleaner alternative types for that product; the swap categories list what the catalog covers today.

On skin, left on Low

Under the default Cautious lens c12-15 alkyl benzoate on skin (left on) rates Low: a little concern, nothing the app would ask you to swap. Mainstream (consensus only) rates it Clean; Based (adds the fringe) rates it Low. Researched 2026-09-28.

Sourced concerns (2)

EmergingIrritant · allergenconfidence 80%

A human case study reported allergic contact dermatitis to C12-15 alkyl benzoate, suggesting it may act as a cosmetic allergen in sensitive individuals.

Why here: Direct dermal contact with the ingredient in leave-on products can trigger an immune response in predisposed individuals.
What would have to be true: Topical application in cosmetic products.
The other side: The Cosmetic Ingredient Review (CIR) Expert Panel generally found C12-15 alkyl benzoate to be non-sensitizing in human and animal testing, and it is not expected to be a skin irritant.

Sources the engine cites:

C12–15 alkyl benzoate: a new cosmetic allergen? : Contact Dermatitis — ovid.com (2015) · study
1 web article (lapink.com), linked in the app.

EmergingEnvironmentalconfidence 70%

As a synthetic ester, C12-15 alkyl benzoate may not be readily biodegradable, raising potential concerns about its long-term environmental impact.

Why here: Its synthetic nature means it may persist in the environment after product disposal, even from leave-on products that are eventually washed off or enter wastewater systems.
What would have to be true: Environmental release through wastewater systems after product use.
The other side: The environmental impact of this product has not been fully investigated, and some safety data sheets report no known environmental precautions.

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

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

In its favour (3)

ConsensusIn its favourconfidence 100%

C12-15 alkyl benzoate functions as an emollient, softening and smoothing the skin, and as a texture enhancer and solvent for UV filters in cosmetic formulations.

Why here: In dermal leave-on products, it forms a protective layer, reduces water loss, and improves product feel and stability, also aiding in the even distribution of UV filters.
What would have to be true: Topical application in cosmetic products at typical concentrations (0.5-59%).

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

4 web articles (skinsort.com, lapink.com, nguyenbachemical.com, …), linked in the app.
1 community or commercial page, not counted here.

ConsensusClearedconfidence 100%

The Cosmetic Ingredient Review (CIR) Expert Panel concluded that C12-15 alkyl benzoate is safe as used in cosmetics and is generally not considered a skin irritant or sensitizer at typical concentrations.

Why here: The CIR panel's assessment specifically covers its use in leave-on cosmetic products, noting low water solubility and unlikelihood of absorption into the bloodstream.
What would have to be true: Topical application in leave-on cosmetic products at concentrations up to 59%.

Sources the engine cites:

Safety assessment of alkyl benzoates as used in cosmetics — nih.gov (2012) · regulator or public body
Safety Assessment of Alkyl Benzoates as Used in Cosmetics — psu.edu (2012) · review
2 web articles (skinsort.com, nguyenbachemical.com), linked in the app.
2 community or commercial pages, not counted here.

ConsensusClearedconfidence 100%

C12-15 alkyl benzoate does not have endocrine disrupting properties with respect to humans or non-target organisms.

Why here: Evaluations based on EU regulations and safety data sheets specifically address its potential for endocrine disruption in human exposure scenarios from cosmetic use.
What would have to be true: General human exposure from cosmetic use.

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

1 web article (cosmileeurope.eu), linked in the app.

Not researched here

The engine has no dossier for c12-15 alkyl benzoate 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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