Organic silicium is a polysaccharide extracted from alga and combined with sylanoids groups. Water soluble and biologically active, they have multiple activities (restructuring effects, prevention, protection, reparation and metabolism stimulation) and an excellent skin tolerance (non-toxic and non-allergenic). It globally helps to restructure and reinforce the conjunctive tissue, collagen and elastin fibres. It has a strong skin tightening and moisturising activity. It is also known to act as an anti-oxidant to actively prevent skin ageing.