Non-therapeutic use of a biodegradable hydrocarbon oil

Abstract

A method for the anti-ageing cosmetic treatment of the skin or of the hair applying 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.

1 . Method for the anti-ageing cosmetic treatment of the skin or of the hair comprising at least one step of applying 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. 
     
     
         2 . 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 . Method according to  claim 1 , for a topical application. 
     
     
         4 . 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 . Method according to  claim 1 , wherein the hydrocarbon oil is chosen from among non-cyclic isoparaffins comprising from 14 to 18 carbon atoms. 
     
     
         6 . 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 . 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 . 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 . Method according to  claim 1 , wherein the hydrocarbon oil that is applied has the form of a cosmetic or dermatological composition comprising hydrocarbon oil. 
     
     
         10 . Method according to  claim 9 , wherein the cosmetic or dermatological composition comprises at least one fatty substance chosen from among: vegetable oils, hydrocarbon oils, vegetable butters, fatty alcohols and ethers, oily esters and alkanes and silicone oils and/or at least one additive. 
     
     
         11 . Method according to  claim 9 , wherein said cosmetic or dermatological composition is an anhydrous composition, an emulsion such as a water-in-oil emulsion (W/O), an oil-in-water emulsion (O/W) or a multiple emulsion, a nano-emulsion, or a dispersion or a gel. 
     
     
         12 . Method according to  claim 1 , wherein the step of applying is a step of spreading. 
     
     
         13 . 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. 
     
     
         14 . Method according to  claim 9 , wherein the cosmetic or dermatological composition comprises hydrocarbon oil in a quantity ranging from 0.5 to 80% by weight relative to the total weight of the composition. 
     
     
         15 . Method according to  claim 1 , characterized in that it involves an anti-ageing effect on the skin or hair. 
     
     
         16 . Method according to  claim 1 , wherein the hydrocarbon oil has a kinematic viscosity at 40° C. less than or equal to 5 cSt. 
     
     
         17 . Method for the anti-ageing cosmetic treatment of the skin or of the hair comprising at least one step of applying 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. 
     
     
         18 . Method according to  claim 17 , wherein the hydrocarbon oil has a kinematic viscosity at 40° C. less than or equal to 5 cSt. 
     
     
         19 . Method according to  claim 17 , 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. 
     
     
         20 . Method for treatment according to  claim 17 , 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.