Variable color transparent lip balm and preparation method thereof

1. A variable color transparent lip balm, consisting of the following components by weight percent:

4.0% to 5.0% by weight of dibutyl lauroyl glutamide,

2.0% to 3.0% by weight of polyamide-3,

15.0% to 20.0% by weight of bis-stearyl ethylenediamine/neopentyl glycol/stearyl hydrogenated dimer dilinoleate copolymer,

46.65% to 49.60% by weight of C12-15 alkyl benzoate,

1.0% to 3.0% by weight of heptyl undecylenate,

9.0% to 11.0% by weight of C10-30 cholesterol/lanosterol esters,

10.0% to 15.0% by weight of hydrogenated C6-20 polyolefin,

1.5% to 2.5% by weight of dextrin isostearate,

0.05% to 0.1% by weight of eosin yellowish, and

0 to 0.8% by weight of excipient;

wherein the sum of weight percent of all above components is 100%.

2. The variable color transparent lip balm of claim 1 , wherein the excipient is an anti-oxidant, activator, preservative, aromatic or mixture thereof, which is allowed to be used on lips according to regulatory requirements.

3. The variable color transparent lip balm of claim 1 , consisting of the following components by weight percent:

4.5% to 5.0% by weight of dibutyl lauroyl glutamide,

2.5% to 3.0% by weight of polyamide-3,

17.5% to 20.0% by weight of bis-stearyl ethylenediamine/neopentyl glycol/stearyl hydrogenated dimer dilinoleate copolymer,

48.13% to 49.60% by weight of C12-15 alkyl benzoate,

1.0% to 2.0% by weight of heptyl undecylenate,

9.0% to 10.0% by weight of C10-30 cholesterol/lanosterol esters,

10.0% to 12.5% by weight of hydrogenated C6-20 polyolefin,

1.5% to 2.0% by weight of dextrin isostearate,

0.07% to 0.1% by weight of eosin yellowish, and

0.8% by weight of excipient;

wherein the sum of weight percent of all above components is 100%.

4. The variable color transparent lip balm of claim 3 , wherein the excipient is an anti-oxidant, activator, preservative, aromatic or mixture thereof, which is allowed to be used on lips according to regulatory requirements.

5. The variable color transparent lip balm of claim 1 , consisting of the following components by weight percent:

5.0% by weight of dibutyl lauroyl glutamide,

3.0% by weight of polyamide-3,

20.0% by weight of bis-stearyl ethylenediamine/neopentyl glycol/stearyl hydrogenated dimer dilinoleate copolymer,

49.60% by weight of C12-15 alkyl benzoate,

1.0% by weight of heptyl undecylenate,

9.0% by weight of C10-30 cholesterol/lanosterol esters,

10.0% by weight of hydrogenated C6-20 polyolefin,

1.5% by weight of dextrin isostearate,

0.1% by weight of eosin yellowish, and

0.8% by weight of excipient.

6. The variable color transparent lip balm of claim 5 , wherein the excipient is an anti-oxidant, activator, preservative, aromatic or mixture thereof, which is allowed to be used on lips according to regulatory requirements.

7. A method for preparing the variable color transparent lip balm of claim 1 , comprising the steps of:

(1) stirring and mixing dibutyl lauroyl glutamide, polyamide-3, bis-stearyl ethylenediamine/neopentyl glycol/stearyl hydrogenated dimer dilinoleate copolymer, C12-15 alkyl benzoate, heptyl undecylenate, C10-30 cholesterol/lanosterol esters, hydrogenated C6-20 polyolefinand dextrin isostearate thoroughly, then heating the ingredients to 130-140° C., until all are completely melted and transparent;

(2) stirring and adding eosin yellowish and excipient to the mixture of step (1) thoroughly at a temperature of 100° C., whereby a completely dissolved mixture is obtained; and

(3) cooling the mixture obtained by step (2) to 95-100° C., injecting the mixture into a mould and demoulding the mixture when it has cooled to 4-12° C.