High Definition Broadcasting

HDTV (high definition television) is a television display technology that provides picture quality similar to 35 mm. movies with sound quality similar to that of today's compact disc. Some television stations have begun transmitting HDTV broadcasts to users on a limited number of channels. HDTV generally uses digital rather than analog signal transmission. 

(http://whatis.techtarget.com/definition/HDTV-high-definition-television)

High definition television (HDTV) is basically an arbitrary term that applies to any digital television production, transmission, or reception technology with a scanning rate that exceeds the 525 lines of the present U.S. NTSC standard or the 625 lines of the PAL or SECAM standards.

HD quality would make it more visible to see things like the pores on someone’s skin, therefore the makeup would need to be done in more detail, using products such as a primer. HD will most probably show a person’s true skin tone, bone structure and even hairs so the makeup/ hair artist would need to going into further detail. When applying something like a foundation the makeup artist would have to be careful to not overly apply it, and make sure it just looks like part of the skin not caked on. Things that would be more visible on a HD camera would include blemishes, heavily applied base, dry skin and overly powdered skin.

A hairstylist would have to make sure certain details like hair grips and bands are covered as well as anything used to keep the hair in place, you can often use the hair to cover them so this would probably be easier than makeup. As more and more films and TV is shot in HD the hair/ makeup artists will need to be aware that sometimes less is more. Makeup/ hair artist need to be aware of the rise of shooting in HD, therefore able to keep up with other artists in creating the best looks for this high quality. 

(http://www.creativeartistryfx.com/high_resolution_media.pdf)