This method was used to analyse all skin creams with positive results from the Schiff’s test, and can be applied as a more selective procedure for determining formaldehyde.
The release of formaldehyde on the decomposition or degradation of formaldehyde-releasing preservatives (diazolidinyl urea, imidazolidinyl urea, Quaternium-15, BNPD and DMDM hydantoin) depends on many factors such as temperature, pH, light