US 11,883,523 B2
Plant extracts to reduce the appearance of hyperpigmented skin or to lighten skin
Geetha Kalahasti, Plano, TX (US); and David Gan, Southlake, TX (US)
Assigned to MARY KAY INC., Addison, TX (US)
Filed by Mary Kay Inc., Addison, TX (US)
Filed on Sep. 18, 2019, as Appl. No. 16/575,010.
Claims priority of provisional application 62/732,688, filed on Sep. 18, 2018.
Prior Publication US 2020/0085726 A1, Mar. 19, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. A61K 8/9789 (2017.01); A61Q 19/02 (2006.01); A61K 8/06 (2006.01); A61K 8/9711 (2017.01)
CPC A61K 8/9789 (2017.08) [A61K 8/062 (2013.01); A61K 8/9711 (2017.08); A61Q 19/02 (2013.01)] 10 Claims
 
1. A method for reducing melanin in hyperpigmented skin in a person, wherein the hyperpigmented skin is caused by increased melanin production, the method comprising topically applying to hyperpigmented skin caused by increased melanin a composition comprising:
0.0001 wt. % to 1 wt. % of a mixture comprising a combination of Ptychopetalum olacoides bark/stem extract obtained by aqueous extraction and comprising water soluble components of Ptychopetalum olacoides bark/stem, Pfaffia paniculata root extract obtained by aqueous extraction and comprising water soluble components of Pfaffia paniculata root, and Trichilia catigua bark extract obtained by aqueous extraction and comprising water soluble components of Trichilia catigua bark;
wherein topical application of the composition reduces melanin in the hyperpigmented skin.