Table 7.

Solid content percentage (mean ± SD, n = 3) for the tested shampoo brands.

	Time for sample	Pantene	Sunsilk	Herbal essences	Ultra Doux	Syoss	L'Oreal Elvive
At 25 °C	At zero time	23.7 ± 5.4	16.7 ± 0.7	17.9 ± 1.2	24.1 ± 2.9	19.5 ± 2.9	26.6 ± 2.7
	After four weeks	24.1 ± 4.9	17.0 ± 3.6	18.1 ± 3.2	24.7 ± 5.9	20.0 ± 4.5	26.9 ± 4.4
	After eight weeks	23.1 ± 4.5	16.0 ± 0.7	17.2 ± 4.1	23.9 ± 4.7	19.1 ± 4.7	25.9 ± 5.7
At 4 °C	At zero time	23.7 ± 5.4	16.7 ± 0.7	17.9 ± 1.2	24.1 ± 2.9	19.5 ± 2.9	26.6 ± 2.7
	After four weeks	22.9 ± 5.0	16.9 ± 4.2	18.0 ± 3.8	23.9 ± 4.9	19.9 ± 5.1	26.3 ± 4.9
	After eight weeks	23.1 ± 4.4	16.9 ± 5.0	17.8 ± 5.2	24.1 ± 4.9	19.9 ± 4.6	26.2 ± 4.8
At 45 °C and 75% humidity	At zero time	23.7 ± 5.4	16.7 ± 0.7	17.9 ± 1.2	24.1 ± 2.9	19.5 ± 2.9	26.6 ± 2.7
	After four weeks	25.1 ± 2.2	17.5 ± 3.1	18.7 ± 0.3	24.9 ± 4.7	20.7 ± 2.4	27.5 ± 3.7
	After eight weeks	24.4 ± 4.7	16.9 ± 5.0	18.1 ± 3.8	24.5 ± 4.5	19.9 ± 4.2	26.9 ± 4.7