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Shampoo less study

Welcome to the study!
This research has been approved by the Ethics Committee  of the School of Management, University of Southampton.
Please read the following information. You will need to indicate that you have understood this information before you can continue. Also, you must not be a legal minor - that is, you may participate if you are over the age of 16 (or over 18 if you live in the USA). By checking the box at the bottom of this page and clicking 'Continue', you are consenting to participate in this study.
Dr Denise Baden, University of Southampton, England.
What is this study about, and what's involved?
This questionnaire is part of an ongoing research project into hairdressing and hair-care practices. The aim of the study is to get independent evidence of the effects of shampoo use on hair - more precisely the effect of reducing the frequency of shampooing on hair. To take part in this study it is necessary that you reduce the frequency of shampooing by at least one day for 2 weeks, so any differences in hair condition as a result of less frequent shampooing can be assessed. For example if you shampoo every day, then shampoo every other day, if you shampoo every 3 days, then shampoo every 4 days etc. Please don't  use any more amount of shampoo in the following wash - just the same as you usually do.  It is OK to just use water inbetween shampoos. Please make a note if the effects on hair after 2 weeks are any different to the effects on hair after just one week, as it may be the case that your hair will adjust to less frequent shampooing and effects may change over time. Preliminary results from the ‘no conditioner’ survey indicate that not using conditioner means hair needs washing less frequently, and looks less greasy, so if you are going an extra day without shampoo and are worried that your hair may look greasy, try using less/no conditioner, but if this doesn't apply to you then just stick to your usual routine, except for leaving the extra day.
We are exposed to constant marketing information from businesses whose aim is to get as many people using as much product as possible for commercial ends. It is therefore important to have independent sources of evidence, especially when using or over-using unnecessary products that can be damaging to hair, to our heating bills (heating water costs is typically the highest energy consuming activity that takes place in our homes) and to the environment.
You may contact Denise Baden if you have any questions or concerns about the study on
Legal Stuff and Consent
Participation in this study is fully voluntary and you have the right to withdraw at any time with no penalty.
If participants have further questions about their rights or if they wish to lodge a complaint or concern, they may contact  Dr Martina Prude, Head of Research Governance, Research Governance Office, University of Southampton, Southampton, SO17 1BJ. Phone: (
I certify that I am 16 years or older, or if I am participating in the USA, that I am 18 years or older. I have read the above consent form and I give consent to participate in the above described research.