Complex sentence: If there is need, PVC clothes should be washed by hand with warm water and a small amount of liquid detergent.Washing powder should not be used because the flakes can remain on clothing after washing, and also can stick the plastic layer.
Split into simpler sentences: If there is need, PVC clothes should be washed by hand with warm water and a small amount of liquid detergent. Should be not use washing powder because the flakes can remain on clothing after washing, and also can stick the plastic layer.