Cyclomethicone:

Cyclomethicone is a conditioning agent, solvent, humectant, carrying agent and viscosity controlling agent. It has a unique fluidity that makes it easily spreadable. When applied to the skin and hair, it gives a silky & slippery feeling to the touch and acts a mild water repellent by forming a protective barrier on the skin. It can also fill in fine lines and wrinkles, plumping the skin.​

Can be found in the following O Naturals Products: Hair Mask (Coming Soon)