4 Mukhi Rudraksha as found in various Puranas :
4 faced Rudraksha has four natural lines from head to bottom at equal distance. The power of Brahma exists in its whole effectiveness and Divinity. Being influenced by the creative wisdom of the four headed Lord Brahma, it gives the wearer the creative power and provides him learning and knowledge. The dull mined students must wear it. And it is beneficial to scientists, researchers, intellectuals, artists, writers and journalists. It increases wit and intelligence. If the three beads of four faced Rudraksha are fastened in the right hand nobody can be stand to face to the wearer.
In mythology it represents Goddess Saraswati and Brahma. Malefic effects of Mercury include intellectual dullness of mind, lack of grasping and understanding power, difficulty in effective communication and also neurotic conditions of mind. This Mukhi also governs logical and concrete and structural thinking.