Composition

A N-acylated taurine composition comprising:

• (a) a first N-acylated taurine compound of the formula (IA) or a salt thereof:
• and (b) a second N-acylated taurine compound of the formula (IB) or a salt thereof:
• wherein
• R1a and R2a are C1-4 alkyl, wherein R1a and R2a are the same;
• R3 is C1-6 alkyl, C2-6 alkenyl or C1-6 alkyl substituted with an aryl group;
• and
• R4 is C4-25 alkyl or C4-25 alkenyl, wherein the C4-25 alkyl or C4-25 alkenyl is optionally substituted by hydroxy.

The N-acylated taurine composition according to claim 1, wherein:

• R1a and R2a are C1-2 alkyl wherein R1a and R2a are the same;
• R3 is C1-6 alkyl;
• and
• R4 is C8-18 alkyl or C8-18 alkenyl, wherein the C8-18 alkyl or C8-18 alkenyl is optionally substituted by hydroxy.

A N-acylated taurine compound of the formula (IC) or a salt thereof:

• wherein:
• R1 and R2 are each independently selected from H or C1-4 alkyl, provided that one of R1 and R2 is H and the other of R1 and R2 is C1-4 alkyl;
• R3 is C1-6 alkyl, C2-6 alkenyl, or C1-6 alkyl substituted with an aryl group;
• and
• R4 is C4-25 alkyl or C4-25 alkenyl wherein the C4-25 alkyl or C4-25 alkenyl is optionally substituted by hydroxy.

A taurine composition comprising a first taurine compound of the formula (IIA) or a salt thereof and a second taurine compound of the formula (IIB) or a salt thereof:

• wherein
• R1a and R2a are C1-4 alkyl, wherein R1a and R2a are the same;
• and
• R3 is C1-6 alkyl, C2-6 alkenyl or C1-6 alkyl substituted with an aryl group.