Fatty acyl isethionate product-containing liquid cleansing compositions stabilized with mixture of long chain and short chain fatty acids/fatty soaps

A personal liquid skin or hair cleansing composition comprising:

• (a) 3 to 45 wt % of fatty acyl isethionate surfactant product wherein said product comprises fatty acyl isethionate as well as free fatty acids and/or fatty soaps in the said product;
• (b) 0 to 15% wt % of a co-surfactant selected from the group consisting of anionic (excluding the fatty acyl isethionate component of the fatty acyl isethionate surfactant product of (a)), amphoteric and nonionic surfactants and mixture thereof;
• (c) 4 to 20 wt % C8 to C20 total linear fatty acids/fatty soaps (comprising both the free fatty acids/fatty soaps in the fatty acyl isethionate surfactant product of item (a) as well as those found in the composition) in which fatty acids/fatty soaps with carbon chain length longer than 14 comprise 20 to 70 wt % by wt. of said total linear fatty acids/fatty soaps in the composition;
• wherein the ratio of total linear fatty acid/fatty soap to total synthetic surfactants (defined as the sum of pure fatty acyl isethionate surfactant of item (a) and synthetic co-surfactant of item (b)) is at least 0.25 and less than 1.0;
• wherein viscosity of the said liquid cleanser composition measured at 0.01 s−1 and temperature of 25° C., is at least 50 Pas;
• and the ratio of the viscosity at 40° C., to the viscosity at 25° C., when measured at 0.01 s−1, is at least 0.2;
• wherein the pH of the liquid composition is in the range of 4.0 to 8.0;
• wherein said composition is stable (physically stable and will not partition as can be visually observed) at 45° C. for at least 2 weeks.