Loading patent…
AssigneeThe Procter & Gamble Company
InventorsNicholas William Geary, Dieter Hans Josef Langsch, Simon Paul Godfrey
Estimating the term…
A method of providing a colour change to human or animal hair wherein the method comprises the steps of (a) applying to hair a hair colour altering composition, (b) leaving the hair colour altering composition on the hair for from about 0.5 to about 15 minutes and then (c) optionally, rinsing the hair colour altering composition from the hair, wherein steps (a) and (b) and (c) are repeated from about once a month to about 3 times a day. The multiple application method of the invention provides an increase in colour change (as measured by Delta E) compared with conventional methods which use a single application of hair colouring composition for around 20-30 minutes. In addition, the method of the present invention is no more damaging to the hair compared with conventional single application methods.
A method for providing a permanent, semi-permanent or demi-permanent colour change to human or animal hair wherein the method comprises the steps of (a) applying to hair a hair colour altering composition, (b) leaving the hair colour altering composition on the hair for from about 0.5 to-about 15 minutes and then (c) optionally rinsing the hair colour altering composition from the hair, wherein steps (a) and (b) and (c) are repeated from about once a month to about 3 times a day.
A method of altering the colour of the hair comprising applying to the hair a hair colour altering composition, such that when the composition is used in the Multiple Application Delta E Technical Test Method as described hereinabove the composition gives a value of Delta E which is the same as or more than the value of delta E when the composition is applied to the hair in a single application as described in the Single Application Delta E Technical Test Method as described hereinabove.
Dependencies are inferred from the claim text.