Non-therapeutic use of a biodegradable hydrocarbon oil

1. A method for the anti-ageing cosmetic treatment of the skin or of the hair comprising at least one step of applying a composition comprising:

at least 90% by weight, relative to the total weight of the composition, of a hydrocarbon oil that has a content by weight of isoparaffins ranging from 90 to 100%, a content by weight of normal paraffins ranging from 0 to 10% and a content of carbon of biological origin greater than or equal to 90% relative to the total weight of the hydrocarbon oil, wherein the hydrocarbon oil has a biodegradability at 28 days of at least 60% according to OECD 306 method; and

at least one compound of the quaternary ammonium type or of the isothiazolinone type, in an amount of less than 10% by weight.

2. The method according to claim 1 , for slowing down skin ageing and/or for preventing and/or delaying the formation of wrinkles and/or for attenuating wrinkles and/or for tightening the skin and/or for strengthening hair.

3. The method according to claim 1 , for a topical application.

4. The method according to claim 1 , wherein the hydrocarbon oil comprises a content by weight of isoparaffins ranging from 95 to 100% relative to the total weight of the hydrocarbon oil.

5. The method according to claim 1 , wherein the hydrocarbon oil is chosen from among non-cyclic isoparaffins comprising from 14 to 18 carbon atoms.

6. The method according to claim 1 , wherein:

the hydrocarbon oil comprises a content by weight of normal paraffins less than or equal to 5% relative to the total weight of the hydrocarbon oil; and/or

the hydrocarbon oil comprises a content by weight of naphthenic compounds less than or equal to 1%, relative to the total weight of the hydrocarbon oil; and/or

the hydrocarbon oil comprises a content by weight of aromatic compounds less than or equal to 500 ppm, relative to the total weight of the hydrocarbon oil.

7. The method according to claim 1 , wherein the hydrocarbon oil has a boiling temperature ranging from 230 to 340° C., according to the standard ASTM D86 and/or a flash point greater than or equal to 110° C. according to the standard EN ISO 2719 and/or a vapour pressure at 20° C. less than or equal to 0.01 kPa.

8. The method according to claim 1 , wherein the hydrocarbon oil is obtained by a method of catalytic hydrogenation at a temperature from 80 to 180° C. and at a pressure from 50 to 160 bars of a deoxygenated and/or isomerised feedstock of biological origin.

9. The method according to claim 1 , wherein the step of applying is a step of spreading.

10. The method for treatment according to claim 1 , for slowing down skin ageing and/or for preventing and/or delaying the formation of wrinkles and/or for attenuating wrinkles and/or for tightening the skin and/or for strengthening hair.

11. A composition comprising:

at least 90% by weight, relative to the total weight of the composition, of a hydrocarbon oil comprising a content by weight of isoparaffins ranging from 90 to 100%, a content by weight of normal paraffins ranging from 0 to 10% and having a content of carbon of biological origin greater than or equal to 90% relative to the total weight of the hydrocarbon oil, wherein the hydrocarbon oil has a biodegradability at 28 days of at least 60% according to OECD 306 method; and

at least one compound of the quaternary ammonium type or of the isothiazolinone type, in an amount of less than 10% by weight.

12. The composition according to claim 11 , wherein at least one of the following is true:

the hydrocarbon oil comprises a content by weight of isoparaffins ranging from 95 to 100% relative to the total weight of the hydrocarbon oil;

the hydrocarbon oil is chosen from among non-cyclic isoparaffins comprising from 14 to 18 carbon atoms;

the hydrocarbon oil comprises a content by weight of normal paraffins less than or equal to 5% relative to the total weight of the hydrocarbon oil;

the hydrocarbon oil comprises a content by weight of naphthenic compounds less than or equal to 1%, relative to the total weight of the hydrocarbon oil;

the hydrocarbon oil comprises a content by weight of aromatic compounds less than or equal to 500 ppm, relative to the total weight of the hydrocarbon oil;

the hydrocarbon oil has a boiling temperature ranging from 230 to 340° C., according to the standard ASTM D86 and/or a flash point greater than or equal to 110° C. according to the standard EN ISO 2719 and/or a vapour pressure at 20° C. less than or equal to 0.01 kPa,

the hydrocarbon oil is obtained by a method of catalytic hydrogenation at a temperature from 80 to 180° C. and at a pressure from 50 to 160 bars of a deoxygenated and/or isomerised feedstock of biological origin.

13. The composition according to claim 11 , wherein the compound is of the quaternary ammonium type.

14. The composition according to claim 13 , wherein the quaternary ammonium is chosen from among benzalkonium chloride and didecyldimethylammonium chloride, alone or in a mixture.

15. The composition according to claim 11 , wherein the compound represents from 0.1 ppm to 1% by weight of the total weight of the composition.

16. Method according to claim 1 , wherein it involves an anti-ageing effect on the skin or hair.

17. A composition, comprising:

at least 90% by weight, relative to the total weight of the composition, of a hydrocarbon oil comprising a content by weight of isoparaffins ranging from 90 to 100%, a content by weight of normal paraffins ranging from 0 to 10% and having a content of carbon of biological origin greater than or equal to 90% relative to the total weight of the hydrocarbon oil, wherein the hydrocarbon oil has a biodegradability at 28 days of at least 60% according to OECD 306 method; and

at least one compound of the isothiazolinone type, in an amount of less than 10% by weight.

18. The composition according to claim 17 , wherein at least one of the following is true:

the hydrocarbon oil comprises a content by weight of isoparaffins ranging from 95 to 100% relative to the total weight of the hydrocarbon oil;

the hydrocarbon oil is chosen from among non-cyclic isoparaffins comprising from 14 to 18 carbon atoms;

the hydrocarbon oil comprises a content by weight of normal paraffins less than or equal to 5% relative to the total weight of the hydrocarbon oil;

the hydrocarbon oil comprises a content by weight of naphthenic compounds less than or equal to 1%, relative to the total weight of the hydrocarbon oil;

the hydrocarbon oil comprises a content by weight of aromatic compounds less than or equal to 500 ppm, relative to the total weight of the hydrocarbon oil;

the hydrocarbon oil has a boiling temperature ranging from 230 to 340° C., according to the standard ASTM D86 and/or a flash point greater than or equal to 110° C. according to the standard EN ISO 2719 and/or a vapour pressure at 20° C. less than or equal to 0.01 kPa;

the hydrocarbon oil is obtained by a method of catalytic hydrogenation at a temperature from 80 to 180° C. and at a pressure from 50 to 160 bars of a deoxygenated and/or isomerised feedstock of biological origin.

19. The composition according to claim 17 , wherein the compound represents from 0.1 ppm to 1% by weight of the total weight of the composition.

20. A composition comprising:

at least 90% by weight, relative to the total weight of the composition, of a hydrocarbon oil comprising a content by weight of isoparaffins ranging from 90 to 100%, a content by weight of normal paraffins ranging from 0 to 10% and having a content of carbon of biological origin greater than or equal to 90% relative to the total weight of the hydrocarbon oil, wherein the hydrocarbon oil has a biodegradability at 28 days of at least 60% according to OECD 306 method; and

at least one compound of the quaternary ammonium type or of the isothiazolinone type, in an amount of less than 10% by weight,

wherein the hydrocarbon oil has a kinematic viscosity at 40° C. less than or equal to 5 cSt.

21. The composition according to claim 11 , wherein the hydrocarbon oil comprises a content of isohexadecane less than or equal to 50% by weight.