Ingredient guide · P

Phenyl Trimethicone

Phenyl Trimethicone is a silky, lightweight silicone ingredient commonly used in UK beauty products to give hair and skin a smooth, glossy finish without feeling heavy or greasy.

Phenyl Trimethicone — Phenyl Trimethicone is a synthetic silicone polymer derived from silica (a mineral obta… | UK Lips ingredient guide

How it works in skincare

In cosmetics and skincare, Phenyl Trimethicone works as an emollient and conditioning agent that forms a breathable, protective film on the surface of skin or hair. This helps to reduce friction, improve spreadability of products, and lock in moisture while delivering a non-greasy, high-shine finish. It is frequently found in serums, primers, hair oils, conditioners and foundations where slip, shine and a soft after-feel are desired.

Key benefits

  • Provides a smooth, silky feel on skin and hair
  • Adds high-gloss shine to hair without weighing it down
  • Improves product spreadability and even application
  • Helps reduce frizz and flyaways
  • Creates a protective barrier that locks in moisture
  • Gives a soft-focus, polished finish to makeup

Best for

dry skin, normal skin, mature skin, sensitive skin

Where it comes from

Phenyl Trimethicone is a synthetic silicone polymer derived from silica (a mineral obtained from quartz sand) combined with phenyl groups.

Products with Phenyl Trimethicone

Not every product on UK Lips lists a full ingredient breakdown — so there may be many more formulas that contain Phenyl Trimethicone than we can show here. These are the comparisons where we’ve confirmed it in the listed ingredients.

All ingredients