Leptospermum glabrescens is a shrub or small tree that typically grows to a height of . It has smooth bark on the smaller stems, that is shed in stringy strips. The leaves are linear, elliptic or narrow egg-shaped leaves with the narrower end towards the base, mostly long and wide, tapering to a very short
petiole, and
glabrous. The flowers are arranged singly on short side branches and are about in diameter. There are broad, brownish
bracts at the base of the flower bud but that usually fall off as the flower develops. The
floral cup is about long and densely hairy. The
sepals are more or less round, about long and hairy, the
petals are white, long and the
stamens long. Flowering occurs from December to January and the fruit is a
capsule wide and remains on the plant at maturity. ==Taxonomy and naming==