In practice polarising filters are used to reduce reflected light and improve the saturation of colours, especially useful with blue skies, water and glass. Definitely still made. The idea with cross-polarised photos (both camera and light source are filtered) for texturing resources would be to cut down on light reflecting from the skin. There are some photos, along with height maps derived from scan data, available at surfacemimic.com (search for 'Adam' and 'Isabella'); other sites I know of are texturing.xyz and 3dscanstore.com. Commercial licences don't come cheap though ;)

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