C24-28 Alkyldimethylsiloxy Trimethylsiloxysilicate
What is C24-28 Alkyldimethylsiloxy Trimethylsiloxysilicate?
C24-28 Alkyldimethylsiloxy Trimethylsiloxysilicate is a synthetic organosilicon compound derived from siloxane chemistry. It features a trimethylsiloxysilicate core modified with long-chain C24-28 alkyl groups linked through dimethylsiloxy units, creating a branched polymer structure. Primarily used in color cosmetics, sunscreens, and hair styling products within the makeup and sun care categories. Upon application and solvent evaporation, it dries to form a thin, elastic, non-tacky film on the skin or hair surface. This film adheres strongly, repels water and sebum, improves product wear time, and maintains a smooth, matte finish while allowing skin to breathe. Its alkyl chains enhance compatibility with oils and provide a silky texture, distinguishing it from simpler silicones.
Benefits
Creates a durable, transfer-resistant barrier on skin or hair.
Offers water and sebum repellency for prolonged product performance.
Delivers a smooth, non-greasy feel without pore clogging.
Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| People seeking long-lasting makeup that resists smudging. | Those with rare silicone sensitivities. |
| Individuals with oily skin needing sebum control in products. | People preferring silicone-free or natural formulations. |
| Users of sunscreens wanting extended water resistance. | Individuals sensitive to film-forming agents in testing. |
Safety Notes
- Rated low hazard by environmental health assessments.
- Deemed safe for cosmetic use by ingredient review experts.
Frequently Asked Questions about C24-28 Alkyldimethylsiloxy Trimethylsiloxysilicate
What does this ingredient do in products?
It forms a flexible film that boosts water resistance and wear time in makeup and sunscreens.
Is it suitable for acne-prone skin?
Yes, with a comedogenic rating of zero, it avoids pore clogging.
Are there any irritation concerns?
Evidence points to low irritation potential for most users.