Function of Beauty is a fun and innovative way to find the right purple shampoo for you. Function of Beauty’s products introduce tailor made products, which differ from person to person, depending on your hair type, texture and colour. Simply take the quiz, where you are guided to build your hair profile, select your hair goals, customise your formula and fragrance and there you have it – your very own custom purple shampoo. The best thing about this product is that the product is unique and personal to you. It’s just an added bonus that there are no sulfates, parabens, phthalates, mineral oils or gluten, as well as being certified vegan and cruelty free. If you want to try something new and exciting, this is definitely the way to go. It is a mid range product, with prices starting from $35 per bottle.