What a Hairless is
A hairless animal has no coat to maintain and, precisely because of that, needs more routine care than most coated ones. A coat absorbs the oil the skin produces and wicks it along the hair shaft. With no coat there is nowhere for that oil to go, so it stays on the skin, collects dirt, and becomes a sticky film and blocked follicles within days.
The Sphynx is the breed most people picture. Peterbalds, Donskoys and Bambinos have the same skin. Among dogs there is the Chinese Crested, which is only partly bare, along with the Xoloitzcuintli, the Peruvian Inca Orchid and the American Hairless Terrier.
These animals are bathed on a schedule. This is the only coat type on the site where that sentence is true.
Also called
Bare, near-naked
Clipping
No coat to clip
Matting risk
Low
What to brush with
No brush. A soft cloth, a gentle shampoo and close attention to the ears, nail beds and skin folds.
Clipping this coat
Nothing to clip. The skin produces the oil a coat would normally absorb, so these need regular bathing on a schedule that no coated animal does.