Fuente: WIPO "tomato" A hydratable concentrated surfactant composition comprising: a) a furan-based anionic sulphate free surfactant; b) an amphoteric and/or zwitterionic surfactant; c) a C6 -C14 acid or alcohol; and d) from 30 to 85% by weight water; wherein the furan-based anionic sulphate free surfactant comprises: a1) a head group comprising i) a furan ring ii) a sulphonate group directly attached to the furan ring b1) an amide containing linker group; and c1) a hydrophobic alkyl tail group having a carbon chain length of 8 to 18; wherein the furan-based anionic sulphate free surfactant has the structure of Formula (I) where R is a hydrophobic alkyl tail group having a carbon chain length of 8 to 18, 18:1 and 18:2 where R groups of different chain lengths can be used in combination as a blend, preferably a blend of chain lengths of C12 and C14; and where X is a counterion, selected from organic and inorganic counterions; wherein the composition comprises a lamellar phase; and wherein the composition has a viscosity of from 25 to 15,000 cps, when measured with a Discovery HR-2 Rheometer using sand blasted plates with a 100 micron gap and a shear 25 rate of 4-15 s-1 and at a temperature of 25 ⁰C. The composition can be used as a concentrate in small volumes and diluted as used or can be diluted with water in refill packaging to ensure a reduction in plastic waste.