10 Mukhi Rudraksha as found in various Puranas :
Lord Vishnu, is the major God of Hinduism and Indian mythology, popularly regarded as the preserver of the universe. Some Puranic literature refers to him as the eternal, all-pervading spirit and associate him with the primeval waters believed to have been omnipresent before the creation of the world. So regarded, Vishnu is depicted frequently in human form, sleeping on the great serpent Shesha and floating on the waters. One hand holds a lotus; a second holds a conch; a third holds a discus ( which always returns by itself after being thrown ); and the fourth carries a mace. The petals of the lotus are believed to symbolize the unfolding of creation; the conch is said to symbolize that from which all existence originates; and the discus and the mace reputedly were obtained by Lord.
The representing deity of 10 Mukhi Rudraksha is Lord Narayana ( The Preserver ). 10 Mukhi Bead helps the wearer to overcome difficult times and ensures that the wearer and the family of the wearer is protected. Ten Mukhi Rudraksha creates a feeling of security. The 10 Mukhi Rudraksha Bead works like a shield on one's body and drives evils away . Wearer is protected from influence of evil spirits , ghosts and black magic. There is no ruling planet for 10 Mukhi bead and it pacifies all negative planetary energy . One wears the 10 Mukhi Rudraksha Bead by the blessings of Lord Mahavishnu. Excellent for Narayana bhaktas (devotees). One gets the power to concentrate well. 10 Mukhi Bead Also aids in devotion and meditation.
Srimaddevibhagavat 11th Skand Chapter IV -
Narayana said - 21 Ten Mukhi Rudraksha Beads is Visnu and removes all the tears and troubles due to planets, evil powers and snakes.
Chapter V -
God Said - 22 Wearer of Rudraksha on hair tuft on the crown, in ear, in neck, in hand and in abdomen attains the status of Siva, Vishnu and Brahma.
MANTRAMAHARNAVA Lord Siva said - A Rudraksha with 10 Faces is General of an army and is also Vishnu Himself. 10 Faced rudraksha Bead sublimates the malefic effects of planets, evil powers and eliminates snakes.