Modified larch tannin was prepared by grafting copolymerization and sulfoalkylation, and successfully used as retanning agent, possessing good water solubility and enhanced penetration rate.
The biological stability(assessed by AOC), had close relation to tannin value, and was increasing with the tannin value, but it had no velation to the pore size distribution.
This high performance oil free eye gel derived from plant sources that are rich in proteic fraction, flavonoids and tannins helps to induce brighter complexion by helping skin recover its firmness.
When acacia trees are grazed by animals, they quickly react by producing chemicals called tannins, which make their leaves unappetizing and tough to digest.