truth be told, everything in red is not so good for the hair. parabens have been linked to cancer (18 out of 20 tumors contain parabens; search on google for the specific study), perfumes contain many toxic ingredients, and sodium lauryl sulfates are some of the harshest chemical detergents around, and can seriously strip your hair if you don't follow up with a moisturizing conditioner.
however, if used in moderation this should be totally fine.
i don't trust many of lush's products... several of them have poor reviews on their own website, plus just about all of their products contain mineral oil, sulfates, or propylene glycol (derivative of mineral oil).