Light Screen technically halves the damage done to them by special moves; it still does not reduce damage done by moves that deal direct damage. Light Screen now remains in effect for 5 turns.
Light Screen is removed from a Pokémon's side of the field if any Pokémon (including an ally) uses Brick Break or Defog on it (even if it is immune to Brick Break due to being Ghost-type), unless it is protected from the move or the move misses.
If Light Clay is held when Light Screen is used, it will extend the duration of Light Screen from 5 to 8 turns.
A wondrous wall of light is put up to reduce damage from special attacks for five turns.