| Date | Requester | Request | Endorsements
YES/NO | Comments |
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| 2008 | Procter and Gamble | Treatment with "Head and Shoulders" results in hair shine improvement |  | Scalp inflammation is associated with alterations in hair fibre properties that reduce hair shine. "Head and Shoulders" reduces scalp inflammation and associated hair shaft surface anomalies and leads to improved hair shine. | | 2008 | Procter and Gamble | "Head and Shoulders" shampoo results in hair loss improvement | | Head and Shoulders conditioning agents reduce split ends and hair fibre breakage. Hair loss due to hair breakage is reduced through regualr use of Head and Shoulders Shampoo | | 2007 | Procter and Gamble | Treatment with "Head and Shoulders" shampoo arrests or reverses baldness due to androgenetic alopecia |  | While there is indirect evidence that scalp inflammation is associated with hair shedding and baldness and that "Head and Shoulders" reduces scalp inflammation, the only evidence that "Head and Shoulders" has a direct benefit on baldness due to androgenetic alopecia is a single clinical trial published in the prestigous British Journal of Dermatolgy in 2003. In this 26 week study involving 200 health men aged between 18 and 49 years, an increase in hair count was seen with Head and Shoulders Shampoo that was maintianed throughout the 26 week study and that was approximately half of that seen with topical minoxidil solution. No advantage was seen in using both the 5% minoxidil solution and the Head and Shoulders shampoo. The benefit of the head and shoulder shampoo reached statistical significance with respect to hair count data (P< 0.05) but not with respect to assessment of global improvement (p<0.1). While there is some evidence that Head and Shoulders arrests of reverses baldness, the level of evidence is insufficient to endorse a claim. | | 2007 | Procter and Gamble | "Head and Shoulders" shampoo is anti breakage. | | "Head and Shoulders" reduces hair breakage from accumulated damage from cosmetic factors due to incorporated conditioning/protective agents. | | 2006 | Procter and Gamble | "Head and Shoulders" provides continuous dandruff protection with regular use. | | Regular use, provides dandruff protection not only immediately after the wash, but also in between regular washes. Therefore, the dandruff protection is uninterrupted. | | 2005 | Proctor and Gamele | "Head and Shoulders" products have been proven effective against the fungal cause of dandruff. | | The AHSF has thoroughly reviewed the effectiveness of the Head and Shoulders shampoos and conditioner product range and endorse its use by dandruff sufferers. While there are a number of strategies used in the treatment of pityriasis capitis, (and some such as topical corticosteroid lotions, tar and salicylic acid shampoos may work independent of Melassezia sp. colony reduction), the most reliable predictor of time to remission for pityriasis capitis for antidandruff shampoo products is efficacy in killing Melassezia species.
The active ingredient in H & S is ZPT which is fungicidal. Effectiveness of H & S in the treatment of dandruff depends on delivery of ZPT to the scalp surface in a fungicidal concentration, with even dispersion of ZPT across the entire scalp and persistence of ZPT on the scalp following rinsing with water. In a comparative microscopic assessment of different particle sizes of ZPT found in various antidandruff shampoos, the 2.5um ZPT particles provides better dandruff flaking efficacy than other particle-size ZPT.
The 2.5um ZPT particle size is significantly (p<0.05) better in reducing the amount of Malassezia sp. at both the 1 week and 2 week time point, compared to all other particle sizes tested.
| | 2005 | Procter and Gamble | "Head and Shoulders" shampoo removes up to 100% of visible flakes (with regular use). | | P & G have developed in-house propriety imaging software and a validated clinical scoring system to measure dandruff known as the adherent scalp flaking score (ASFS). This measurement tool provides a robust measure of dandruff severity. This scoring system has been used by dermatologists to measure dandruff severity in adequately powered randomized controlled trials. The primary endpoint for these trials is a an ASFS score of <15. If a dandruff patient's ASFS is less than 15, 83% of ordinary people will observe the patient to be completely free of dandruff. This figure does not differ statistically from the observations of ordinary people when inspecting a scalp of a non-dandruff affected person.
A score of <15 does not mean that 100% of the dandruff will be gone (ASFS = 0), just that it would not be detectable by the ordinary person except with very careful examination. Similarly if the mean score among patients using a particular shampoo is 15, it does not mean that all users will achieve a 100% removal of visible dandruff.
The protocol for the pivotal efficacy study was that 100 ordinary people were asked to each grade 195 subjects with varying degrees of dandruff. The observations were done at a distance of 2 feet under standardised conditions with the subjects seated in a swivel chair, rotated at various angles, under bright light with their hair carefully parted and clipped to reveal scalp.
The observations of the 100 ordinary people were compared to the more detailed and stringent observations of a dermatologist.
The study found that participants using H & S all had an ASFS of <15. The power of the study is adequate and the results were statistically significant.
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