D4, D5, D6 Cyclosiloxanes Content for Cosmetic Products
This test determines the content of Octamethylcyclotetrasiloxane (D4), Decamethylcyclopentasiloxane (D5) and Dodecamethylcyclohexasiloxane (D6) in cosmetic products.
What are D4, D5 and D6?
D4, D5 and D6 are commonly used in cosmetic products as hair-conditioning agents, skin-conditioning agents (emollient) and solvent/diluent. It allows the cosmetic products to spread smoothly on the skin or hair, giving a silky touch and feel in the application.
|
Substance(s) |
CAS No. |
|
Octamethyl-cyclotetrasiloxane (D4) |
556-67-2 |
|
Decamethyl-cyclopentasiloxane (D5) |
541-02-6 |
|
Dodecamethyl-cyclohexasiloxane (D6) |
540-97-6 |
On the other hand, they also bring environmental concerns. These substances are discharged into aquatic environments and the atmosphere, exhibiting persistence, bioaccumulation, and toxicity to aquatic life.
Hence, the EU restricts the use of D4, D5 and D6 in leave-on and rinse-off cosmetic products in order to safeguard the environment. Check out this technical article to understand the current restrictions in the EU.
How is the test conducted?
The test is conducted by in-house method using headspace GC-MS.
How long will the test take?
It takes 10-14 working days for a regular service.
How much sample should be submitted for the test?
Please submit a minimum of 20g or 20mL per product for one test.
