Phenyl Trimethicone
Non-soluble silicone Not CG-friendly
A light silicone fluid prized for adding high shine without much weight. Common in shine sprays and serums.
Curly Girl note: Not water-soluble.
How our checker rates it
| Mode | Rating | Why |
|---|---|---|
| Curly Girl | Avoid | Non-soluble silicone — builds up unless you wash with sulfates. Not CG-friendly. |
| Relaxed hair | Good | Silicone — coats the strand and helps protect relaxed hair from heat and friction. |
| Low porosity | Caution | Non-soluble silicone — builds up on low-porosity hair; clarify regularly. |
| Protein-sensitive | OK | No concerns for this mode. |
Ratings assume it is listed near the top of the label. After the first preservative or fragrance (likely 1% or less) most cautions soften.
What non-soluble silicone ingredients do
Silicones that coat the strand for slip, shine and heat protection but do not rinse out with water, so they can build up without a sulfate or clarifying wash.
Similar ingredients
Sources
Last data update:
- Cosmetic Ingredient Review (CIR). Ingredient safety assessments. Safety assessments for cosmetic ingredients cited on ingredient pages.
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