Gopi Chandan Tilak has been traditionally interpreted as a good luck charm. the tilak has a cooling effect on the forehead and this can assist in concentration and meditation. A dot between the eyebrows symbolizes the third eye of Lord Shiva. Among Vaishnavites (followers of Vishnu), the many tilak variations usually include two or more vertical lines resembling the letter U, which symbolizes the foot of Vishnu. There is sometimes a central line or dot. Most Vaishanative tilaks are made of Chandan paste.