Shed Skin is an ability introduced in Generation III. So far 6 Pokémon have this ability.
Effect
In battle
A Pokémon with Shed Skin has a 30% chance of being cured from a non-volatile status condition (e.g. Burn, Paralysis, etc.) at the end of each turn.
Outside of battle
Shed Skin has no effect outside of battle.
Pokémon with Shed Skin
Normal ability of Ekans, Arbok, Mega Arbok, Costraw, Trawpint, and Barand.