Is Propanediol a safer molecule than some other glycols in personal care and anti-aging biocosmeceutical products?
Bibliographic record
Abstract
Is Propanediol a safer molecule than some other glycols in personal care and anti-aging biocosmeceutical products?Propanediol (1,3-propanediol) is an ingredient increasingly used by the industry for electronic cigarettes, personal care creams and anti-aging serums among many other products.For some skin care purposes, it is used to enhance the transdermal absorption of other ingredients (e.g., the actives) enabling moisturizing effects and skin smoothness to be improved.Propanediol may be derived from corn although synthetic forms also exist.It is a chemical similar to other glycols such as propylene glycol (1,2-propanediol) but generally believed to be safer.This short communication reveals in fact that only limited scientific evidence of safety is available.Preliminary signs of toxicity have been found following administration of propanediol in humans although its dose-dependent toxicity and long-term side effects on health have not been significantly explored.Consequently, as of today, skin care and anti-aging products for elderly, a vulnerable population, should not automatically be considered as safe.Those comprising 1,3-propanediol should probably be used with caution until scientifically-proven safety data for the intended purposes are obtained by independent scientists.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".