1. The first class of products that showed promise were leather tanning agents . 2. A recent trend is that of lotions or moisturizers containing a gradual tanning agent . 3. His first research topics at Geigy concerned synthetic and plant-derived dyes and natural tanning agents . 4. This conversion occurs during the liming process, before introduction of the tanning agent ( chromium salts ). 5. The hides are then treated with tanning agents to create the perfectly white leather of a baseball. 6. In the article about Erythrulose, it is mentioned that it is not FDDA approved as a self-tanning agent . 7. This work led to the production of the synthetic tanning agents Irgatan G, Irgatan FL and Irgatan FLT. 8. It can be used as a tanning agent , a brown dye, a food additive and as herbal medicine. 9. Ashes of the wood are used in making soap and as a depilatory and tanning agent for hides. 10. In some variations of the process, cedar oil, alum, or tannin were applied to the skin as a tanning agent .
