A dehydrated skin is a condition. Even oily and combination skin can be dehydrated. Dehydration can be reduced by drinking lots of water, consuming citrus fruits & salads. To treat dehydrated skin look for the products that contain hydrating active ingredients such as hyaluronic acid.
Horse oil is a rich source of good fat & linolenic acid that is famous for its skin healing and anti-inflammatory properties. Unlike sheep & cows, linolenic acid is abundantly present in horse fat which boasts incredible similarities with human sebum.