1. A vesicle-forming skin oil comprising one or more oil-soluble components, one or more W/O emulsifiers with an hydrophilic-lipophilic balance (HLB) value of 2-5.9 and one or more vesicle-forming lipids. 2. The skin oil as claimed in claim 1, characterized in that further comprises one or more additives, chosen from active ingredients, antioxidants, perfume substances, preservatives, UV filters, vitamins, dyes, consistency modulators, solubilizers, with the exception of compositions comprising cholesterol and/or wool wax alcohol. 3. The skin oil as claimed in claim 1 or 2, characterized in that, in total, the oil-soluble component(s) is/are present in an amount of 50-99%, the emulsifier(s) is/are present in an amount of 0.510%, the vesicle-forming lipid(s) is/are present in an amount of 0.01-10% and the additive(s) is/are present in an amount of 0-40%. 4. The skin oil as claimed in any of claims 1-3, characterized in that the emulsifier(s) is/are chosen from sorbitan derivatives, polyethoxylated products, (poly)glyceryl derivatives, polyol esters, glucose derivatives, pentaerythritol derivatives, alkylphenols, polymers and siloxane derivatives or mixtures thereof. 5. The skin oil as claimed in any of claims 1-4, characterized in that the oil component(s) is/are chosen from hydrocarbons, fatty alcohols, fatty acid esters, fatty alcohol ethers, polyol fatty acid esters, triglycerides, natural fats, oils or natural liquid waxes or silicone oils or silicone waxes or mixtures thereof. 6. The skin oil as claimed in any of claims 1-5, characterized in that the oil component is chosen from liquid paraffin, isopropyl palmitate, mediumchain triglycerides, sunflower oil, soybean oil, peach kernel oil, apricot oil, jojoba oil, silicone oils or mixtures of the above mentioned components. 7. The skin oil as claimed in any of claims 1-6, characterized in that the W/O emulsifier(s) is/are present in an amount from 1.0-8%. 8. The skin oil as claimed in any of claims 1-7, characterized in that the W/O-emulsifier(s) has/have a HLB value of 3.5-5.5. 9. The skin oil as claimed in any of claims 1-8, characterized in that cetyl dimethicone copolyol or cetyl dimethicone copolyol in a mixture with polyglyceryl-4-isostearate and hexyl laurate is present as emulsifier. 10. The skin oil as claimed in any of claims 1-9, characterized in that the vesicle-forming lipid is chosen [lacuna] phospholipids, such as egg and/or soybean lecithin, phosphatidylcholine, ceramides, phytosterols and ethoxylated derivatives thereof with a degree of ethoxylation of 5 to 16 and polyoxyethylated fatty alcohols with an HLB value of 2-6 or combinations thereof, in particular of phytosterols of the above mentioned type with ethoxylation products thereof. 11. The skin oil as claimed in any of claims 1-10, characterized in that the skin oil has active ingredients, preservatives and vitamins as additives. 12. The skin oil as claimed in any of claims 1-11, characterized in that the skin oil has, as additives, those chosen from antioxidants, perfume substances, dyes, UV filters, as additives. 13. The skin oil as claimed in claim 11 or 12, characterized in that the active ingredients are chosen from essential oils and terpenes, plant extracts, circulation-promoting substances, antiphlogistics and antibacterial substances or mixtures thereof. 14. The skin oil as claimed in any of claims 1-13, characterized in that the perfume(s) is/are standard commercial perfume oil compositions, the preservative(s) is/are chosen from methylparaben or propylparaben or mixtures thereof and/or sorbic acid, the antioxidants are chosen from butylhydroxytoluene, butylhydroxyanisole, ascorbyl palmitate, tocopherol or mixtures thereof with synergistic agents, the vitamins are chosen from vitamin E, vitamin A, vitamin C and derivatives thereof. 15. The skin oil as claimed in any of claims 1-14, characterized in that the oil component(s) is/are present in an amount of 85-97%, the W/O emulsifier(s) is/are present in an amount of 2-6%, the vesicle-forming lipid(s) is/are present in an amount of 0.5-5% and the additives are present in an amount of 1-15%. 16. The skin oil as claimed in any of claims 1-15, characterized in that ethanol is present as hydrotropic solubilizer. 17. A process for the preparation of skin oils as claimed in any of claims 1-16, characterized in that the oil component(s) is/are mixed at room temperature and optionally heated to 40-90 degree C, the emulsifier(s) is/are incorporated with an HLB value of 2-5.9, then the mixture is cooled to room temperature and then the additive(s) is/are incorporated. 18. The use of skin oils as claimed in any of claims 1-16 as skincare oil. 19. The use of skin oils as claimed in any of claims 1-16 as massage oil. 20. The use of skin oils as claimed in any of claims 1-16 as sunscreen oil.