Preservatives could be regarded as one on the main causes of cosmetic-induced contact dermatitis. In this work we evaluated the feasibility of using an unconventional diagnostic procedure based on bioelectrical skin responses referred to as Electro-Acupuncture Diagnostics according to Voll (EAV) to predict contact dermatitis to cosmetic preservatives. This technique could provide a fast, easy, non invasive and sensitive evaluation of the irritating potential of cosmetic ingredients, in addition to patch test. Five of the most commonly used preservatives in cosmetic products (methyl paraben, propyl paraben, imidazolidinyl urea, benzalkonium chloride, methylcholoroisothiazolinone/methyltioisothiazolinone) were assessed on 46 healthy human volunteers. The results obtained by the EAV bioresonance method were compared to conventional patch tests performed on the same subjects. The percentages of subjects who showed a matching response for the same preservative using both the patch test and the EAV bioresonance method ranged from 74% (methyl paraben) to 85% (benzalkonium chloride). These findings suggest that the EAV bioresonance method could represent a valuable and sensitive tool to evaluate potential contact dermatitis arising from the use of preservatives in cosmetics.
|Titolo:||Bioresonance as a tool to predict contact dermatitis to cosmetic preservatives|
|Data di pubblicazione:||2006|
|Appare nelle tipologie:||1.1 Articolo in rivista|