Gloss paint has been around for centuries. Though it is used less often that flat or eggshell finish gloss finish paint is still produced and still has its uses.
Gloss is the shiniest paint of all. They were once always oil based, but there have been water based versions for many years that are reasonably hardwearing but much better for cleaning up (with plain water). Gloss is vivid looking, and that is exactly what is needed in some applications. The only real disadvantage of gloss is that the shiny finish highlights any imperfections in the walls; surfaces must be very well prepared.
The most common use for glossy paint is trim- the windowsills, door frames and sometime doors and skirting boards. This gives a pleasant outline to a room already finished in matt, flat or eggshell. If the room has obvious fixtures such as radiators, railings or exposed piping the use of gloss paint can make these functional items seem like part of the décor. Likewise, wooden or cane furniture can look very vivid with gloss paint, and if it matches the colour or the trim and walls the room can look very slick.
Many front and back doors have a gloss finish. Even under fairly harsh conditions. Garden furniture does equally well.
Occasionally a room’s walls are painted in gloss. This can work well if the owner wants a vivid finish. Rooms can look extremely modern and bright with primary colours, though the décor must suit this. Alternately, brown gloss can look classically old fashioned, especially with crème or tan colours. This suits vintage or even rustic furniture.