The Sandman possesses the ability to convert all or part of his body into a sand-like substance by mental command. His brain has attained subliminal awareness of all granulated particles of his body. Through conscious effort, he can affect the degree of molecular cohesion between the numerous adjoining surfaces of his particles and thus cause locomotion of discrete volumes, down to the individual grains. His radically mutagenically altered body composition and increased density enable him to compact or loosen the particles of sand that make up his form. Consequently, the Sandman can become as hard as sandstone, or disperse his body so that he becomes invulnerable to physical attacks. He can shape his sand-state body into any continuous shape he can imagine. He can project his sand particles outward at high speeds and, when in the shape of a bulky object, with the impact of a large sandbag.The Sandman is vulnerable to temperatures over 3,400 degrees Fahrenheit. Such temperatures can cause his highly impure silicate composition to fuse into amorphous silicate (glass). The Sandman maintains mental control of the particles of which his body is composed so that he can reform his scattered grains unless a substantial portion of his body mass has been isolated. Apparently, he can also convert common grains of sand around him into constituents of his body to replenish portions he might lose track of during battle. In this manner, he can increase his overall size and volume (to some as yet unknown limit), or that of his limbs.There appears to be no limit to how long the Sandman can remain in his sand-state. If he were to be rendered unconscious while in his sand-state, he would remain in that state, although the relaxing of his control over his particles would cause him to become an amorphous pile of sand.The Sandman's mind continues to function in astral form even when he has turned his head into sand and even when the particles of sand that composed his brain are widely scattered. The limit to how far the particles of his brain can be dispersed before he is unable to reassemble is not yet known.