This slippery red oil has a mild corrosive effect on most metals. Long term use is detrimental to any suit of armour, however it provides the short-term benefit of easier movement and noise reduction. Any metal armour treated with armor soft has its armor check penalty reduced by one. The effect lasts 1 hour. Each application has a 5% cumulative chance of completely ruining the armour; the check being made after the duration of the armor soft. This substance does not provide any benefit to non-metallic or magical armour (the magical properties protecting the latter), however the corrosive properties still apply to non-magical, non-metallic armour.