Hedrin Once Hedrin Treat & Go Hedrin Protect & Go Hedrin Dual Home The Hedrin Family Hedrin Protect & GO Hedrin Protect & Go Hedrin® Protect & Go A hassle-free conditioning spray, clinically proven to help protect against head lice checkmark Disrupts the life cycle of head lice, preventing an infestation checkmark Water-based conditioner which is easy to use and can be applied to wet or dry hair after shampooing checkmark Apply after every hair wash or at least twice a week