As regards centrifuge and thermostability tests, all
preparations gave positive results within six months.
The pH values showed minimal changes within the
5.5–6.2 range, which remained constant for the entire
experimental period.
The rheological characteristics of the skin creams are
shown in Fig. 1.
The formulations containing 7% (IV) and 5% (III)
Sepigel 305 show a higher apparent viscosity and therefore greater consistency than those prepared with 2.5%
(II) and 1.5% (I) Sepigel 305 lower apparent viscosity.
The organoleptic and subjective features are reported
in Table 3