Although the salon does halal nail polish, they do not do nail art with halal polish as to you would have to wait for the polish to dry for 20mins before applying the nail art (which I guess is a waste of time from a business perspective? - although I don't see the harm in tending to another customer whilst the polish dries and then coming back to do the nail art) - I thought this was a bit misleading from Treatwell's behalf as on the website you are able to add nail art with halal polish