Well the Hair dateing TNG is kinda interesting. See, in TOS the women wore harstyles that were very much like hair styles in the 60’s. It dates the show to the 60’s… but at least those were good hair styles ( and usually hot chicks!)
In TNG they didn’t give those people late 80’s/early 90’s hair-do’s. They gave them fictional hair styles that didn’t even really fit in at the time. I always think of Vash / Ro Lauren ( hair hairtyle was the “Skank do” where I lived) and Keera. The TNG hairstyles ( exception being Troi and Beverly) were not being worn buy 90% of Americans and NON of the “hot” people that you were seeing on tv at the time. Usualy the weird hair was shown when a race was a human looking alien or out of uniform federation citizen.
Point is every “makeing of” book, documentry, or comentary track on the DVD’s for TNG state that the costume and makeup people tried to make up their own “timeless” original styles. Unfotunantly I think that it dates TNG more than TOS’s hair and make up date it. And even thou it does date it… the TOS people often end up looking better.
Granted there was a deliberate attempt to make the TNG less sexy ( at least that what Majel Barret told us at the Trek-a-thon in Chattanooga in 1987 when they were promoteing TNG). So this might have been intentional.
Dateing isn’t realy that bad… as long as it still looks good. Miramanee looks like she was an actress from the 60’s… but she isn’t an eyesore the way Vash’s sideways hair style or ANY Kera hairstyle is when watched today.