Composition, method and kit for enhancing hair

A method comprising:

• directly applying to hair an effective hair curling amount of a composition to increase a curl of the hair, the composition comprising a compound of the formula:
• wherein the dashed bonds represent a single or double bond;
• wherein A and B are each a fluorine atom;
• wherein Z is a cycloalkyl moiety having from three to seven carbon atoms, an aryl moiety including from four to ten carbon atoms or a heteroaryl moiety including three to nine carbon atoms and at least one heteroatom selected from nitrogen, oxygen and sulfur;
• and
• wherein X1 and X2 are individually selected from a hydrogen atom, an alkyl moiety having from one to six carbon atoms,
• and
• R5 is an alkyl moiety having from one to six carbon atoms;
• wherein R1 and R2 are individually selected from an oxo group, a hydroxyl group or an ester group, and R6 is a saturated or unsaturated acyclic hydrocarbon group having from 1 to about 20 carbon atoms, and —(CH2)mR7 wherein m is 0 or an integer of from 1 to 10, and R7 is cycloalkyl group, having from three to seven carbon atoms, or an aryl or heteroaryl group, as defined above;
• wherein y is 0 or 1, x is 0 or 1 and x and y are not both 1, or a salt thereof;
• and
• leaving the composition on the hair.