MÜHLE KOSMO Safety Razor, Bog OakThe Material Bog Oak This rare material comes from wood which sank into bogs many centuries ago and has undergone various processes of change over time. An expressive, dark colour develops due to the tannins in the bog. The scarcity of these tree trunks today makes this material a genuine rarity. The colouring of the wood varies between brown, dark brown and black brown. Several polishes with fine oils provide an additional seal for the surfaces and