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1. (WO2019032805) HAIR TREATMENT COMPOSITIONS AND METHODS
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Claims

I claim:

1. An improved hair care composition wherein the improvement comprises the presence of an effective amount of at least one aryl alkanone compound having the Formula I


wherein Ri, R2, R3, R4 and Rs which may be the same or different, are each independently H, OH, alkyl or alkoxy, Re is CH3 or OR7 where R7 IS alkyl to prevent or reduce hair damage or hair color fading as compared to the use of the same composition without the aryl alkanone.

2. The improved hair care composition of claim 1 wherein R-i, R2, R3, R4 and R5 which may be the same or different, are each independently H or a C1-C8 linear or branched alkyl or alkoxy group and Re is CH3 or OR7 where R7 is a C1-C12 alkyl.

3. The improved hair care composition of claim 1 wherein Ri, R2, R3, R4 and Rs which may be the same or different, are each independently H or a C1-C4 linear or branched alkyl or alkoxy group and Re is CH3.

4. The improved hair care composition of claim 1 wherein R1 = R5 = H and each of R2, R3, and R4 is independently a C1-C4 linear or branched alkoxy or a C1-C8 linear or branched alkyl and Re is CHsor OC2H5.

5. The improved hair care composition of claim 1 wherein Ri = R2 = R5 = H; and each of R3and R4 is independently a C1-C4 linear or branched alkoxy or C1-C8 linear or branched alkyl and R6 is CH3or OC2H5.

6. The improved hair care composition of claim 1 wherein the aryl alkanone of Formula 1 is selected from the group consisting essentially of:

Compound 1A: R1 = R3 = R5 = OMe and R2 = R4 = H; R6 = CH3;

Compound 1B: R1 = R3 =Rs = H and R2 = R4 = OMe; Re = CH3;

7. The improved hair care composition of claim 1 wherein the aryl alkanone of Formula 1 is selected from the group consisting essentially of:


8. The improved hair care composition of claim 1 wherein the hair care composition comprises other agents or ingredients which are oxidizing agents and the one or more aryl alkanones is present in an amount whereby the weight ratio of the aryl alkanone to the oxidizing agents is from 25:1 to 1 :25.

9. The improved hair care composition of claim 1 wherein the hair care composition comprises other agents or ingredients which are oxidizing agents and the one or more aryl alkanones is present in an amount whereby the weight ratio of the aryl alkanone to the oxidizing agents is from 15: to 1:15.

10. The improved hair care composition of claim 1 wherein the hair care composition is a hair treatment composition selected from hair coloring products, shampoos, conditioners, hair restorative treatments, perming products, alcohol based hair sprays, gel hair sprays, and hair bleaching compositions.

11. The improved hair care composition of claim 1 wherein the hair care composition is a hair coloring product which comprises one or more components that are individually packaged and combined and/or used concurrently or sequentially in the hair coloring process and the aryl alkanone is present in at least one of the components thereof.

12. The improved hair care composition of claim 12 wherein the aryl alkanone is free of phenolic hydroxy groups.

13. The improved hair care composition of claim 1 wherein the composition is a pretreatment composition or a post treatment composition and the composition comprises from about 0.1 to about 15 wt percent of the aryl alkanone.

14. The improved hair care composition of claim 1 wherein the composition is a pretreatment composition or a post treatment composition and the composition comprises from about 0.5 to about 10 wt percent of the aryl alkanone.

15. The improved hair care composition of claim 1 wherein the composition is a pretreatment composition or a post treatment composition and the composition comprises from about 1 to about 4 wt percent of the aryl alkanone in a carrier suitable for application to the hair.

16. The improved hair care composition of claim 1 wherein the composition is a pretreatment composition to be applied to the hair prior to application of a hair treatment composition comprising oxidizing agents.

17. The improved hair care composition of claim 16 wherein the pretreatment composition is intended to be applied before bleaching, perming or coloring the hair.

18. The improved hair care composition of claim 1 wherein the composition is a pretreatment composition to be applied to the hair prior to exposure to oxidizing conditions other than a hair treatment composition.

19. The improved hair care composition of claim 18 wherein the pretreatment composition is intended to be applied prior to exposure to the sun or air pollutants and/or prior to participating in an aquatic activity in which the hair is exposed to water chemicals.

20. The improved hair care composition of claim 19 wherein the pretreatment composition is or includes a sunscreen.

21. The improved hair care composition of claim 1 wherein the composition is a post-treatment composition to be applied to the hair following the treatment of the hair with a hair treatment composition comprising oxidizing agents.

22. The improved hair care composition of claim 1 wherein the composition is a post-treatment composition to be applied to the hair following exposure to oxidizing conditions other than a hair treatment composition.

23. The improved hair care composition of claim 22 wherein the post-treatment composition is intended to be applied to the hair following exposure to the sun or air pollutants and/or participating in an aquatic activity in which the hair is exposed to water chemicals.

24. A method of preventing or protecting hair from photo-, thermal- or oxidative damage comprising applying to the hair a composition comprising an effective amount of at least one aryl alkanone compound having the Formula I


wherein Ri, f¾, F¾, R4 and R5 which may be the same or different, are each independently H, OH, alkyl or alkoxy, Re is CH3 or OR7 where R7 is alkyl.

25. A method of reducing or mitigating the damage caused by hair treatment compositions comprising either (i) incorporating into the hair treatment composition an effective amount of at least one aryl alkanone compound having the Formula I


wherein R1t R2, R3, R4 and R5 which may be the same or different, are each independently H, OH, alkyl or alkoxy, R6 is CH3 or OR7 where R7 is alkyl or (ii) treating the hair with composition comprising at least one of the aforementioned aryl alkanones in an effective amount prior to or following the application of the hair treatment composition.