Inside the Mix – Understanding additives in 3D printed concrete
3D printed concrete offers the potential for quick sustainable construction
As of May 1, 2026, new EU regulations will take effect that restrict the use of Silver (CI 77820 / CAS 7440-22-4) in cosmetic products.
Silver has been classified as a Reproductive Toxicant Category 2. For particles between 100 nm and 1 mm, maximum concentration limits will apply, and in some product categories, Silver will have to be completely removed.
From 1 May 2026, Silver will no longer be permitted in aerosols or sprays, nor in nail lacquers or other general cosmetic products. Lip products and eyeshadows will have a new limit of 0.2%, while toothpaste and mouthwash will be limited to 0.05%.
| Lip Products & Eyeshadow | 0.2 % |
| Toothpaste & Mouthwash | 0.05 % |
| Aerosols / Sprays | 0 % (Not Allowed) |
| Nail Lacquer & Other Products | 0 % (Not Allowed) |
Table 1: Permitted Concentrations of Silver in common cosmetic and personal care products.
Geotech Speciality Pigments do have Silver-containing products. If you would like information or assistance in determining compliant pigment usage under these regulations, please contact your account manager or call our office. Geotech also offer alternative pigments that can achieve similar effects without the use of Silver.
3D printed concrete offers the potential for quick sustainable construction
Expandable graphite and Quarzwerke minerals can be used to enhance flame-retardant systems for EV safety.
High Temperature Expandable Graphite from LUH is able to be used in thermoplastics without expanding during the extrusion process.