June 2024: BIORIUS Information Letter 129: D4, D5, D6 REACh restrictions published

The Commission Regulation (EU) 2024/1328 of 16 May 2024 on Cyclotetrasiloxane (D4), Cyclopentasiloxane (D5) and Cyclohexasiloxane (D6) has been published. It will enter into force on June 6th, 2024. Regulation amends the Annex XVII of the REACH Regulation and is applicable to cosmetics. It implements the following restrictions (new restrictions in bold):

Cyclotetrasiloxane (D4):

• In wash-off products: Already forbidden in the cosmetic products. Only technically unavoidable traces are tolerated (max 0.1%)
• In leave-on products: Already forbidden in the cosmetic products. Only technically unavoidable traces are tolerated (max 0.1%)

Cyclopentasiloxane (D5)

• In wash-off products: already restricted at max 0.1%
• In leave-on products: max 0.1% from June 6th, 2027

Cyclohexasiloxane (D6)

• In wash-off products: max 0.1% from June 6th 2026
• In leave-on products: max 0.1% from June 6th, 2027

These deadlines apply to the placing on the market of products.