Moisture Retention after blow drying Author: Christine Published: 0 comments Learn what is really real, in an industry full of fake › Forums › Ask the Beauty Brains › Moisture Retention after blow drying This topic is empty. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts December 16, 2013 at 10:12 am #91571 ChristineMember How long will it take for water to leave the hair shaft after washing, blow-drying (with heat protectant) if hair is washed/conditioned once per week? Environmental factors roughly included: weather, central heating (I’m in the UK!) December 16, 2013 at 1:20 pm #93033 RandySMember Water equilibrates the external humidity within a matter of hours. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) The forum ‘Ask the Beauty Brains’ is closed to new topics and replies.