Novel complexes of fatty acid esters of polyhydroxyalkanes and pyridine carboxy derivatives

A composition comprising a chemical complex comprising a combination of:

• i) a fatty acid ester in the form of a mono-ester or in the form of a di-ester of formula I or isomers thereof,
• wherein n is 3;
• each R1 and R2 is independently selected from the group consisting of H, OH, OM, OR′, O—CO—R′, straight-chain or branched C1-C6 alkyl and straight-chain or branched C2-C6 alkenyl, provided that one or two of R1 and R2 is —O—CO—R′ and at least one of R1 and R2 is OH;
• R′ is selected from the group consisting of C6-C14 alkyl and C6-C20 alkenyl, and M is an alkali metal;
• and
• ii) niacinamide, a salt or a derivative thereof, wherein the derivative is selected from the group consisting of niacinamide derivatives with one substitution of the ring with substituents selected from halogen, NH2, methyl, OR and SH and from niacinamide derivatives wherein the amide group is in the form of its secondary amide or its tertiary amide.