Ho fatto ricerca in google e oggi ho trovato questo sito:
http://www.happi.com/articles/2007/02/f ... ioners.php
Il fatto è che capisco benissimo l'inglese ma le frasi mi sono arcane perchè di chimica non capisco una ceppa...
In particolare questa parte:
"After repeated use, quaternary ammonium compounds are known to build-up on hair fibers, causing a matted after-feel. Fatty amine salts rinse more readily from the hair, reducing or even eliminating this effect.
Stearamidopropyl dimethylamine is one of the most widely formulated compounds used in hair conditioners to reduce this effect. The amine is typically neutralized in situ with an organic acid such as citric, lactic and propionic, to form a cation salt. It can also be formulated as the neutralized salt. The amine salts are also compatible with anionic surfactants and are often used in two-in-one shampoos to provide conditioning and thickening. Another unique feature is that amine salts do not depress foam. Quaternary ammonium compounds, on the other hand, will form an insoluble complex in the presence of anionic surfactants, which results in a cloudy product along with foam reduction.3,4"
Qualcuno sa spiegarmela??
