Defencare amounts of permethrin can come off in the wash, best way shown by available scientific studies. Permethrin presents in open this link chemical form as using this an odorless Defencare colorless more solid or as a pale brown liquid. However, unlike other chemicals in this group, permethrin is unique in having four stereoisomers, molecules that have identical formulas, atomic sequences, and arrangements, but differ in the way these molecules align in space. You did not mention a specific product, but we assume you are speaking of Permethrin SFR or something similar.
Possible side effects of Defencare include:
Defencare is used to treat diseases such as: Head Lice, Lice, Scabies.
If you need to stop taking it, the dose should gradually be reduced.