Colour BB is designed to blend in with blonde hair. Hair is always naturally darker at the roots, so the Ombre is designed to help blend that in. Color BB is suitable for blondes with naturally medium brown roots, or root shadowed hair colours. It’s the medium level ombre, sitting in between AB and NB.
PONIME is made from high quality real human hair, so treatment won’t differ much from yours. There is no oil producing scalp, so it will need less washing. Most products are water soluble as well, so shampoo is not always necessary. Just a rinse.