	US 12,140,539 B2
	Method for determining rinse properties
Sinead Elizabeth Bond, Liverpool (GB); Lynsey Joanne Coan, Wirral (GB); Raquel Gutierrez-Abad, Manchester (GB); and Jun On Jamie Yip, Liverpool (GB)
Assigned to Conopco, Inc., Englewood Cliffs, NJ (US)
Appl. No. 17/769,854
Filed by Conopco, Inc., Englewood Cliffs, NJ (US)
PCT Filed Nov. 4, 2020, PCT No. PCT/EP2020/080896 § 371(c)(1), (2) Date Apr. 18, 2022, PCT Pub. No. WO2021/104811, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 19212673 (EP), filed on Nov. 29, 2019.
Prior Publication US 2022/0381688 A1, Dec. 1, 2022
Int. Cl. G01N 21/51 (2006.01); G01N 21/47 (2006.01); G01N 21/49 (2006.01)

CPC G01N 21/51 (2013.01) [G01N 21/49 (2013.01); G01N 21/47 (2013.01)]

19 Claims

1. A method of measuring rinse properties of a composition from a surface, the method comprising:

applying a cosmetic treatment composition to a surface;

rinsing the surface with a first amount of water after applying the cosmetic treatment composition to the surface;

collecting a portion of the first amount of water after rinsing the surface with the first amount of water;

measuring a first turbidity of the portion of the first amount of water after collecting the portion of the first amount of water;

determining first rinse properties for the cosmetic treatment composition after measuring the first turbidity;

applying a second treatment composition to the surface after measuring the first turbidity;

rinsing the surface with a second amount of water after applying the second treatment composition to the surface;

collecting a portion of the second amount of water after rinsing the surface with the second amount of water;

measuring a second turbidity of the portion of the second amount of water after collecting the portion of the second amount of water;

determining second rinse properties for the second treatment composition after measuring the second turbidity; and

comparing the first rinse properties and the second rinse properties to determine a relative rate of rinsing of the cosmetic treatment composition and the second treatment composition.