A - Human Necessities – 45 – D
Patent
A - Human Necessities
45
D
73/90
A45D 7/00 (2006.01)
Patent
CA 1282253
METHOD FOR EVALUATING EFFICACY OF A HAIR STYLING PRODUCT Abstract The ability of a hair styling material to enhance the holding power of a curl is determined by a comparison with the holding power of hair set only with water. A tress of hair is wetted and wrapped around a cylinder and held in place until dried. A similar curled tress is treated with a hair styling material. Each of the tresses is compressed across a diameter and the force and deflection are measured. The work of deformation of the treated loop of hair is compared with the work of deformation of the water treated loop of hair by finding the ratio between the two works of deformation. This ratio is a "hold factor" for the hair styling material.
524594
Cannell David W.
Mathews Roger Allen
L'oreal
Oyen Wiggs Green & Mutala
LandOfFree
Method of evaluating efficacy of a hair styling product does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of evaluating efficacy of a hair styling product, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of evaluating efficacy of a hair styling product will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1220948