Wet. It depends on what kind of hair you have.
Wet they cut wet after shampoo-dry they cut it dry
Wet hair
It should be wet when fishtailing hair.
Dry, because when you put the dye in your hair will get wet.
Wet
I would say wet or dry. It doesn't really matter as long as you only take a very little bit of fur of the dog.
Wet, because it's easier for the hair to "cooperate" under the scissors. Dry haircuts don't come out well and your hair can go "bonkers". It is true......There is more control when the hair is wet, but when texturizing, hair should be dry.
hard question. when your hair is dry that is it's natural size and shape, but when it's wet it does go down longer because the wet heaviness brings weight down. but usually it works better with dry hair.
dry
Redken Color Gels should be applied to dry hair. If it's wet, it will dilute the product.
The general rule is that hair color should be applied to DRY hair, as wet hair will dilute the hair color mixture. Only on occasion should color be applied to wet hair, IE. When toning at the shampoo bowl immediately following a bleaching service.
You should use it when your hair is dry since that would be least dangerous.