01 · Evidence context
What the rating actually records
The table separates dimethicone from simethicone and cyclomethicone and reports each individually. The assay provides comparative historical evidence, while human and finished-formula outcomes require different evidence.
The number is retained as a historical observation. The site does not convert it into a current clinical probability or a complete-product grade.
02 · Formulation context
Why the complete formula can differ
A pasted INCI list gives no molecular-weight grade, use level, film structure, or interactions with the rest of the formula. The checker therefore reports only the reviewed name and source rating.
03 · Practical takeaway
How to use this result proportionately
Do not treat dimethicone as the cause of a breakout solely because it appears on a label. Consider the whole routine, timing, and repeated exposure, and consult a dermatologist when needed.
If you compare products, change one routine variable at a time and use the label from the product currently in hand.
04 · Primary source
Comedogenicity and irritancy of commonly used ingredients in skin care products
Journal of the Society of Cosmetic Chemists, 40, 321-333 · Primary rabbit-ear screening study
Ingredients were generally tested at 10% in a rabbit-ear model. The paper calls the assay extremely sensitive, reports source and vehicle effects, and says the survey is not definitive or a substitute for finished-formula and human evidence.
Open source record ↗