Piz Buin Mountain with shea butter and glycerine provides 24-hour moisture and helps to reliably protect against cold and wind. Properties Piz Buin Mountain with shea butter and glycerine provides 24-hour moisture and helps reliably protect against cold and wind. The Mountain line includes Helioplex UVA/UVB photostable sun filter technology and Vitamin E to help protect against the damaging effects of the sun. All products have been tested in the Himalayas. Piz Buin Mountain is available in numerous SPF strengths and product formats - for every skin type and every situation.