Comparisons › Dimethicone vs Cyclopentasiloxane
Dimethicone vs Cyclopentasiloxane: which is better for acne-prone skin?
Quick answer: Cyclopentasiloxane is the safer pick for acne-prone skin. Dimethicone rates 1/5 and Cyclopentasiloxane rates 0/5 on the comedogenic scale.
Side by side
| Dimethicone | Cyclopentasiloxane | |
| Comedogenic rating | Low risk · 1/5 | Acne safe · 0/5 |
| Category | Silicone | Silicone |
| Pore-clogging (≥3) | No | No |
| Fungal-acne trigger | No | No |
Scale: 0 = non-comedogenic (won't clog pores) … 5 = very likely to clog pores.
The verdict
Cyclopentasiloxane is the safer choice for acne-prone skin: it rates 0/5 (non-comedogenic (acne safe)) versus 1/5 for Dimethicone (a very low pore-clogging risk).
Dimethicone: 1/5
Dimethicone rates 1/5 — a very low pore-clogging risk. Most skin tolerates it well; very reactive skin may want to patch test. It is not a common fungal-acne (Malassezia) trigger. Full breakdown: is Dimethicone comedogenic?
Cyclopentasiloxane: 0/5
Cyclopentasiloxane rates 0/5 — non-comedogenic (acne safe). It is not known to clog pores and is generally a safe choice for acne-prone skin. It is not a common fungal-acne (Malassezia) trigger. Full breakdown: is Cyclopentasiloxane comedogenic?
Checking a real product?
Single-ingredient ratings are guidance, not a lab test of a finished formula — concentration and the rest of the ingredient list matter (Draelos & DiNardo, 2006). Paste the full list into the comedogenic ingredient checker to screen everything at once, or the fungal-acne checker if Malassezia is your problem.
By Mitchell Zandwijken · Rated against published comedogenicity references (Fulton 1984; Draelos & DiNardo 2006) · Last updated July 2026.