I use this shampoo maybe once every 4 weeks or more frequently if i have a product build up. I will usually pre poo with a hot oil treatment, which is a mix of various oils.I only massage it into my roots as when I rinse it out it will reach the rest of my hair.
Unlike conditioner this shampoo will last a long time and you will not have to keep repurchasing which is an added bonus.
Pros
Reasonably priced £12.95
Not harsh
Cons
Nothing